Matches · 2026-10-16 · rules version c5

Qwen3.8 27B vs Mercury Decide

Mercury Decide won in 5 turns · 2 min wall clock · 48,161 tokens · $0.021

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Decisions

1. Team preview
   Mercury Decide brought Dragapult,garchomp,rotomwash5,476 tok · 3.8 s · $0.0001

   Lead: 58% BRING: dragapult, 13% BRING: rotomwash, 11% BRING: metagross Pick 2: 31% BRING: garchomp, 24% BRING: scizor, 22% BRING: rotomwash Pick 3: 33% BRING: rotomwash, 29% BRING: scizor, 26% BRING: metagross

   Qwen3.8 27B brought Garchomp,metagross,weavile4,299 tok · 12.3 s · $0.0030

   Opponent has: Garchomp, Scizor, Metagross, Rotom-Wash, Dragapult, Toxapex. Key threats: Dragapult (very fast, Dragon/Ghost), Garchomp (strong physical). My plan: Garchomp leads and Megas for raw power. Metagross tanks and handles Garchomp/Rotom-Wash. Weavile provides priority Ice Shard to threaten Dragapult and Garchomp. Weavile's 194 Spe is a speed advantage.

   Reasoning trace (1,018 words)

   Let me analyze the opponent's team and pick the best 3 Pokémon to bring.
   
   Opponent's team:
   - Garchomp (Dragon/Ground)
   - Scizor (Bug/Steel)
   - Metagross (Steel/Psychic)
   - Rotom-Wash (Electric/Water)
   - Dragapult (Dragon/Ghost)
   - Toxapex (Poison/Water)
   
   Key threats:
   - Dragapult: Very fast (145-213 Spe), Dragon/Ghost typing makes it immune to Normal, Fighting, Bug, Ghost. Can hit hard with Dragon moves.
   - Garchomp: Strong physical attacker, Dragon/Ground
   - Metagross: Steel/Psychic, very defensive
   - Rotom-Wash: Levitate, good special attacker
   - Toxapex: Very defensive, Poison/Water
   - Scizor: Bug/Steel, Technician
   
   My team:
   - Garchomp: Dragon/Ground, Mega Garchomp is very strong physically
   - Metagross: Steel/Psychic, Mega Metagross is very strong
   - Gengar: Ghost/Poison, Mega Gengar is a special attacker
   - Scizor: Bug/Steel, Mega Scizor is very strong physically
   - Chandelure: Ghost/Fire, Mega Chandelure is a special attacker
   - Weavile: Dark/Ice, Life Orb, very fast (194 Spe)
   
   Let me think about what counters what:
   
   Against Dragapult:
   - Garchomp: Dragon/Ground - Dragon moves are super effective, Ground is neutral. Garchomp resists Dragon. Good.
   - Metagross: Steel/Psychic - resists Dragon, can hit with Earthquake (super effective). Good.
   - Scizor: Bug/Steel - resists Dragon, can hit with Bullet Punch. Good.
   - Weavile: Dark/Ice - Ice is super effective against Dragon. Good.
   - Gengar: Ghost/Poison - Ghost is super effective against Ghost. Good.
   - Chandelure: Ghost/Fire - Ghost is super effective against Ghost. Good.
   
   Against Garchomp (opponent):
   - Garchomp: Dragon/Ground - Dragon is neutral, Ground is neutral. Not great.
   - Metagross: Steel/Psychic - resists Dragon, Earthquake is super effective. Good.
   - Scizor: Bug/Steel - resists Dragon, Bullet Punch is super effective. Good.
   - Weavile: Dark/Ice - Ice is super effective against Dragon/Ground. Good.
   - Gengar: Ghost/Poison - Ghost is immune to Ground, can hit with Sludge Wave. Good.
   - Chandelure: Ghost/Fire - Ghost is immune to Ground, Heat Wave is super effective. Good.
   
   Against Rotom-Wash:
   - Garchomp: Dragon/Ground - Ground is super effective. Good.
   - Metagross: Steel/Psychic - resists Electric, Earthquake is super effective. Good.
   - Scizor: Bug/Steel - resists Electric, Bullet Punch is super effective. Good.
   - Weavile: Dark/Ice - Ice is super effective. Good.
   - Gengar: Ghost/Poison - resists Electric, can hit with Focus Blast. Good.
   - Chandelure: Ghost/Fire - resists Electric, Heat Wave is super effective. Good.
   
   Against Toxapex:
   - Garchomp: Dragon/Ground - Ground is super effective. Good.
   - Metagross: Steel/Psychic - Earthquake is super effective. Good.
   - Scizor: Bug/Steel - Bullet Punch is super effective. Good.
   - Weavile: Dark/Ice - not great, Ice is neutral, Dark is neutral.
   - Gengar: Ghost/Poison - Sludge Wave is super effective. Good.
   - Chandelure: Ghost/Fire - Heat Wave is super effective. Good.
   
   Against Metagross (opponent):
   - Garchomp: Dragon/Ground - Dragon is super effective. Good.
   - Scizor: Bug/Steel - Bug is super effective. Good.
   - Weavile: Dark/Ice - not great.
   - Gengar: Ghost/Poison - Focus Blast is super effective. Good.
   - Chandelure: Ghost/Fire - Heat Wave is super effective. Good.
   
   Against Scizor (opponent):
   - Garchomp: Dragon/Ground - Fire Fang is super effective. Good.
   - Gengar: Ghost/Poison - Focus Blast is super effective. Good.
   - Chandelure: Ghost/Fire - Heat Wave is super effective. Good.
   - Weavile: Dark/Ice - not great.
   
   So the best picks seem to be:
   
   1. Garchomp - handles Dragapult, Rotom-Wash, Toxapex, Scizor, Metagross (opponent)
   2. Metagross - handles Garchomp (opponent), Rotom-Wash, Toxapex, Dragapult
   3. Weavile - handles Dragapult (Ice), Garchomp (opponent, Ice), very fast
   
   Or maybe:
   1. Garchomp - main physical attacker
   2. Metagross - tanky, handles Garchomp and Rotom-Wash
   3. Chandelure - handles Toxapex, Scizor, Metagross (opponent)
   
   Actually, let me think about this more carefully. The opponent has a lot of Steel types (Scizor, Metagross) and a Toxapex. They also have Dragapult which is very threatening.
   
   I think the best trio is:
   1. Garchomp (leader) - Mega Garchomp is a powerhouse, handles most of their team
   2. Metagross - tanks hits, handles Garchomp and Rotom-Wash
   3. Weavile - fast, handles Dragapult with Ice Shard, handles Garchomp with Ice
   
   Wait, but Weavile doesn't have a Mega Stone. Let me reconsider.
   
   Actually, looking at the team again:
   - Garchomp has Garchompite
   - Metagross has Metagrossite
   - Gengar has Gengarite
   - Scizor has Scizorite
   - Chandelure has Chandelurite
   - Weavile has Life Orb (no Mega Stone)
   
   So Weavile can't Mega Evolve. That's fine, it's still a good attacker with Life Orb.
   
   Let me think about what the opponent will likely lead with. They have Garchomp, Scizor, Metagross, Rotom-Wash, Dragapult, Toxapex.
   
   I think a good team would be:
   1. Garchomp - leads, Mega Evolves, very strong
   2. Metagross - tanks, handles Garchomp/Rotom-Wash
   3. Weavile - fast, handles Dragapult
   
   Or:
   1. Garchomp
   2. Metagross
   3. Chandelure - handles Toxapex, Scizor, Metagross (opponent)
   
   I'll go with Garchomp, Metagross, Weavile. Weavile's speed (194) is great for handling Dragapult, and it can also threaten Garchomp with Ice Shard.
   
   Actually, let me reconsider. Chandelure might be better than Weavile because:
   - Chandelure can handle Toxapex (Heat Wave is super effective)
   - Chandelure can handle Scizor (Heat Wave is super effective)
   - Chandelure can handle Metagross (Heat Wave is super effective)
   - Chandelure has Taunt which is useful
   
   But Weavile:
   - Can handle Dragapult with Ice Shard (priority)
   - Can handle Garchomp with Ice Shard
   - Very fast (194 Spe)
   - Life Orb boosts damage
   
   I think I'll go with Garchomp, Metagross, Weavile. The Weavile gives me a priority option and speed advantage.
   
   Wait, actually let me reconsider the matchup more carefully.
   
   If the opponent leads with Dragapult:
   - Garchomp: Dragon Claw is super effective, but Dragapult is very fast (145-213 Spe). If Dragapult is faster, it can hit first. Garchomp resists Dragon though.
   - Weavile: Ice Shard is priority and super effective. This is great.
   
   If the opponent leads with Garchomp:
   - Garchomp: Dragon Claw is neutral, Earthquake is neutral. Not great matchup.
   - Weavile: Ice Shard is super effective and priority. Great.
   - Metagross: Earthquake is super effective. Good.
   
   If the opponent leads with Rotom-Wash:
   - Garchomp: Earthquake is super effective. Good.
   - Metagross: Earthquake is super effective. Good.
   
   If the opponent leads with Toxapex:
   - Garchomp: Earthquake is super effective. Good.
   - Metagross: Earthquake is super effective. Good.
   
   I'll go with Garchomp, Metagross, Weavile.
   

2. Turn 1
   Mercury Decide used Dracometeor1,896 tok · 0.8 s · $0.0000

   92% MOVE: dracometeor, 2% SWITCH: garchomp, 2% MOVE: phantomforce

   Qwen3.8 27B used Dragonclawmega2,913 tok · 3.0 s · $0.0017

   Garchomp leads vs Dragapult. Earthquake is useless (Ghost immunity). Dragon Claw [MEGA] is super effective and best offensive option. Speed is close (169 vs 145-213), Dragapult may outspeed. Remaining threats: Garchomp, Scizor, Metagross, Rotom-Wash, Toxapex. Plan: Mega Garchomp for power, Weavile's Ice Shard for priority on Garchomp/Dragapult.

   Reasoning trace (221 words)

   Let me analyze this situation:
   
   - My Garchomp (169 Spe) vs their Dragapult (145-213 Spe range)
   - Dragapult is Dragon/Ghost, so it's immune to Ground moves (Earthquake won't work!)
   - Dragon Claw is super effective on Dragapult
   - I can Mega Evolve Garchomp this turn
   
   Key considerations:
   1. Earthquake is completely useless against Dragapult (Ghost immunity)
   2. Dragon Claw is super effective (2x) on Dragapult
   3. Mega Garchomp boosts Attack significantly
   4. Speed: My Garchomp is 169, Dragapult could be up to 213, so Dragapult might outspeed me
   5. If Dragapult outspeeds, it could hit me first with a Dragon move or Dragon Darts
   
   Best option: Dragon Claw [MEGA] - this gives me the best chance to hit hard with a super effective move. Even if Dragapult outspeeds and hits me first, Mega Garchomp has good bulk and I'll still get my hit in.
   
   Actually, let me reconsider. If Dragapult outspeeds me, it could potentially OHKO me with a Dragon move. But Mega Garchomp has 115 Def and 107 SpD, so it should survive most hits. And Dragon Claw [MEGA] is my best offensive option here.
   
   Swords Dance [MEGA] is also an option if I want to set up, but Dragapult is a threat I want to deal with quickly. Let me go with Dragon Claw [MEGA] for maximum damage.
   

   Qwen3.8 27B switched to Metagross3,378 tok · 9.2 s · $0.0015

   Mega Garchomp fainted to Dragapult's Draco Meteor (Life Orb, super effective). Dragapult at 90% HP, -2 SpA. Switching to Metagross: takes neutral Dragon damage (safer than Weavile which takes 2x). Metagross has Ice Punch (2x vs Dragon) and can Mega for more power. Weavile's Ice Shard is priority but Weavile is 2x weak to Dragon - too risky. Remaining threats: 2 unknown from Garchomp/Scizor/Metagross/Rotom-Wash/Toxapex.

   Reasoning trace (562 words)

   Let me analyze the situation:
   
   1. My Mega Garchomp fainted to Dragapult's Draco Meteor (super effective, Life Orb).
   2. Dragapult is at 90% HP with -2 SpA (from Draco Meteor recoil).
   3. I need to switch to either Metagross or Weavile.
   
   Key considerations:
   - Dragapult is Dragon/Ghost. It's very fast (145-213 Spe range).
   - Weavile has 194 Spe, so it might outspeed Dragapult. Weavile has Ice Shard (priority, BP 40) which is super effective against Dragon.
   - Metagross has 134 Spe, likely slower than Dragapult. Metagross is Steel/Psychic, so it's immune to Dragon moves? No, Steel is not immune to Dragon. But Metagross resists Dragon (0.5x). Actually, Steel/Psychic: Dragon is neutral to Steel and neutral to Psychic, so Dragon is neutral overall. Wait, let me reconsider. Dragon vs Steel: neutral. Dragon vs Psychic: neutral. So Dragon is neutral to Metagross.
   - Weavile is Dark/Ice. Dragon vs Dark: neutral. Dragon vs Ice: super effective (2x). So Dragon moves hit Weavile for 2x damage.
   - Metagross: Dragon is neutral. So Metagross takes neutral damage from Dragon moves.
   - Weavile: Dragon is super effective (2x).
   
   So Metagross is the safer switch against Dragapult's Dragon moves.
   
   However, Weavile has Ice Shard which is priority and super effective against Dragapult. If Weavile outspeeds Dragapult (194 vs 145-213), it could potentially KO or heavily damage it.
   
   But the risk is: if Dragapult outspeeds Weavile and uses a Dragon move, it hits for 2x. With Life Orb, that could be very dangerous.
   
   Let me think about what Dragapult likely has:
   - Draco Meteor (confirmed, now -2 SpA)
   - Likely Dragon Ascent, Dragon Dance, U-turn, Shadow Ball, etc.
   - With -2 SpA, its special attacks are weakened.
   
   If Dragapult has Dragon Ascent (physical), it would hit Weavile for 2x (Dragon vs Ice) and Metagross for 1x (Dragon vs Steel/Psychic is neutral).
   
   Actually wait - let me reconsider the typing:
   - Dragon vs Steel: neutral (Steel doesn't resist Dragon)
   - Dragon vs Psychic: neutral
   - So Dragon is neutral to Metagross.
   
   - Dragon vs Dark: neutral
   - Dragon vs Ice: super effective (2x)
   - So Dragon is 2x to Weavile.
   
   Given that Dragapult is at 90% and has -2 SpA, its special moves are weakened. But if it has a physical Dragon move (Dragon Ascent), it would be very dangerous to Weavile.
   
   Metagross is the safer choice:
   - Takes neutral Dragon damage
   - Can use Earthquake (super effective against... wait, Dragapult is Dragon/Ghost, so Earthquake is neutral)
   - Zen Headbutt is neutral
   - Ice Punch is super effective against Dragon! (Ice vs Dragon = 2x)
   - Bullet Punch is neutral
   
   Actually, Ice Punch is super effective against Dragapult! And Metagross can use it.
   
   But Weavile's Ice Shard is also super effective and has priority. The question is whether Weavile can survive a hit from Dragapult.
   
   If Dragapult uses a physical move (like Dragon Ascent or U-turn):
   - Against Weavile: Dragon Ascent would be 2x (Dragon vs Ice), very dangerous
   - Against Metagross: Dragon Ascent would be neutral, much safer
   
   If Dragapult uses a special move:
   - With -2 SpA, its special moves are much weaker
   - Draco Meteor is already used and weakened
   
   I think Metagross is the safer choice. It can use Ice Punch (super effective) and take neutral damage from Dragon moves. Weavile is too risky against a Dragon-type with potential physical moves.
   
   Let me go with Metagross.
   

3. Turn 2
   Mercury Decide used Phantomforce2,131 tok · 0.7 s · $0.0000

   76% MOVE: phantomforce, 17% MOVE: shadowball, 4% SWITCH: rotomwash

   Qwen3.8 27B used Icepunch3,626 tok · 8.4 s · $0.0016

   Mega Garchomp fainted turn 1. Metagross active at 100%. Can't Mega (already used on Garchomp). Dragapult at 90%, -2 SpA, Life Orb, moves first. Ice Punch is 2x vs Dragon/Ghost (150 effective BP vs Earthquake's 100 neutral). Best damage option. Remaining threats: 2 unknown from Garchomp/Scizor/Metagross/Rotom-Wash/Toxapex. Weavile (194 Spe, Life Orb) is my priority sweeper.

   Reasoning trace (544 words)

   Let me analyze the situation:
   
   - My Mega Garchomp fainted to Dragapult's Draco Meteor
   - Metagross is now active at 100% HP
   - Dragapult is at 90% HP with -2 SpA
   - Dragapult has Life Orb and moves first (speed 145-213 vs my 134)
   
   Key considerations:
   1. Dragapult is Dragon/Ghost - it's immune to Normal, Fighting, and Bug moves
   2. My Metagross has Ice Punch (2x vs Dragon) and Earthquake (neutral vs Dragon/Ghost)
   3. Dragapult's Draco Meteor already dropped its SpA by 2, so it's less threatening offensively
   4. Dragapult likely has Dragon Dance, U-turn, or other moves
   
   Options:
   - Ice Punch: 2x vs Dragon/Ghost, 75 BP. This is super effective and should do good damage.
   - Earthquake: neutral, 100 BP. More raw power but not super effective.
   - Bullet Punch: priority +1, 40 BP. Would go first but very low power.
   - Zen Headbutt: neutral, 80 BP, 90% accuracy.
   
   Let me calculate damage:
   - Ice Punch (75 BP, 2x STAB? No, Metagross is Steel/Psychic, so Ice Punch is not STAB). 75 * 2 (super effective) = 150 effective BP. With Metagross's 187 Atk vs Dragapult's Def (85-139), this should do decent damage.
   - Earthquake (100 BP, neutral, STAB? No, Metagross is Steel/Psychic, so Earthquake is not STAB). 100 * 1 = 100 effective BP. With 187 Atk vs Dragapult's Def.
   
   Actually, Ice Punch at 2x super effective with 75 BP = 150 effective, while Earthquake at neutral with 100 BP = 100 effective. So Ice Punch does more damage here.
   
   But wait - Dragapult moves first. If Dragapult has another attack, it could hit Metagross. What moves might Dragapult have? It revealed Draco Meteor. It could have Dragon Dance, U-turn, Shadow Ball, etc.
   
   If Dragapult uses Dragon Dance, it'll be even more threatening. If it uses another attack, Metagross should tank it fine (Steel/Psychic takes neutral from most Dragon moves, and Ghost moves are neutral on Steel/Psychic).
   
   Actually, let me reconsider. Dragapult is Dragon/Ghost. Its moves could include:
   - Dragon Dance (setup)
   - U-turn (Dragon, 70 BP)
   - Shadow Ball (Ghost, 80 BP)
   - Draco Meteor (already used)
   - Maybe Sucker Punch or other priority
   
   If Dragapult uses U-turn, it'll switch out. If it uses Dragon Dance, it'll set up.
   
   I think Ice Punch is the best option here - it's super effective and should deal significant damage to the 90% HP Dragapult. Even if Dragapult moves first, Metagross should survive most attacks.
   
   Actually, let me think about whether to Mega Evolve Metagross. The prompt says "Mega Evolution available: No" - wait, that's listed under my Pokémon. Let me re-read...
   
   "Mega Evolution available: No" - this means I can't Mega Evolve this turn? Wait, in Pokémon Champions, you can only Mega Evolve once per battle. Since I already Mega Evolved Garchomp, I can't Mega Evolve Metagross. That makes sense.
   
   So my options are just the regular moves. Ice Punch is the best choice - super effective, 75 BP, should do good damage to the weakened Dragapult.
   
   Let me estimate: Metagross Atk 187, Ice Punch 75 BP, 2x super effective. Against Dragapult Def (let's say around 100-120 range). This should do around 50-60% damage to Dragapult at 90% HP, potentially knocking it out or getting it very low.
   
   I'll go with Ice Punch.
   

4. Turn 3
   Mercury Decide used Phantomforce

   Incident report

   Only one legal action: played without asking.

   Qwen3.8 27B used Icepunch8,968 tok · 64.4 s · $0.0085

   Mega Garchomp fainted T1. Metagross active at 100%. Dragapult at 90%, -2 SpA, Life Orb, moves first. Phantom Force is 2x on Metagross (Ghost vs Psychic) - will likely OHKO me. Ice Punch is 2x on Dragon (92 dmg) bringing Dragapult to ~55-83 HP. Plan: sacrifice Metagross this turn, then Weavile's priority Ice Shard (93 dmg) KOs weakened Dragapult next turn. Switching to Weavile now is risky (Phantom Force with Life Orb may OHKO it depending on Atk).

   Reasoning trace (2,935 words)

   Let me analyze the situation:
   
   - My Metagross is at 100% HP, facing Dragapult at 90% HP with -2 SpA
   - Dragapult moves first (145-213 Spe vs my 134 Spe)
   - Dragapult has revealed: Draco Meteor (Dragon/Special, BP 130) and Phantom Force (Ghost/Physical, BP 90)
   - Dragapult has Life Orb
   
   Key considerations:
   1. Dragapult moves first. If it uses Phantom Force (Ghost/Physical, BP 90), it's neutral on Metagross (Steel/Psychic). Ghost is neutral on Steel, neutral on Psychic. So neutral damage.
   2. If Dragapult uses Draco Meteor, it's Dragon/Special - neutral on Metagross (Steel resists Dragon? No, Steel resists Dragon? Let me check: Dragon is resisted by Dragon. Steel doesn't resist Dragon. So Dragon is neutral on Steel/Psychic). Wait, actually Steel resists Dragon? No. Dragon is resisted only by Dragon. So Dragon is neutral on Metagross.
   
   Actually wait - let me reconsider. Metagross is Steel/Psychic.
   - Dragon vs Steel: neutral
   - Dragon vs Psychic: neutral
   - Ghost vs Steel: neutral
   - Ghost vs Psychic: neutral (actually Ghost is neutral on Psychic? No, Ghost is super effective on Psychic! Wait no - Ghost is super effective on Psychic? Let me think... Ghost is super effective on Psychic and Ghost. Yes! Ghost is 2x on Psychic.)
   
   So Phantom Force (Ghost/Physical) is 2x on Metagross's Psychic typing! That's bad.
   
   Wait, let me double-check: Ghost is super effective against Psychic and Ghost types. Yes, that's correct. So Phantom Force would be super effective on Metagross.
   
   And Draco Meteor (Dragon/Special) is neutral on Metagross.
   
   So Dragapult's best option is Phantom Force (2x on Metagross). With Life Orb and -2 SpA (which doesn't affect physical), Phantom Force at BP 90, 2x, with Life Orb... that could be very dangerous.
   
   Let me estimate: Dragapult's Atk is 126-189. Let's say around 150-170 for a physical set. Phantom Force BP 90, 2x STAB (Ghost is STAB for Dragon/Ghost), Life Orb 1.3x.
   
   Damage formula roughly: (2 * level * Atk * BP / Def) / 50 + 2, then multiplied by modifiers.
   
   With Atk ~170, Def 150 (Metagross with Light Metal... wait, Light Metal halves weight but doesn't change Def stat. Metagross Def is 150):
   
   Base damage: (2 * 50 * 170 * 90) / 150 / 50 + 2 = (1,530,000) / 150 / 50 + 2 = 10,200 / 50 + 2 = 204 + 2 = 206
   Then STAB 1.5x: 309
   Then Life Orb 1.3x: 401.7
   Then 2x super effective: 803.4
   
   Wait, that can't be right. Let me redo this properly.
   
   The damage formula is:
   ((2 * Level / 5 + 2) * BP * A / D) / 50 + 2
   
   Where A = attacker's relevant stat, D = defender's relevant stat.
   
   Level 50: (2*50/5 + 2) = 22
   
   So: (22 * 90 * 170 / 150) / 50 + 2 = (336,600 / 150) / 50 + 2 = 2,244 / 50 + 2 = 44.88 + 2 = 46.88
   
   Then multiply by STAB (1.5): 70.32
   Then Life Orb (1.3): 91.4
   Then super effective (2x): 182.8
   
   So Phantom Force would deal about 183 damage to Metagross (155 HP). That would OHKO Metagross!
   
   Even with lower Atk (126): (22 * 90 * 126 / 150) / 50 + 2 = (249,480 / 150) / 50 + 2 = 1,663.2 / 50 + 2 = 33.26 + 2 = 35.26
   STAB: 52.9, Life Orb: 68.8, 2x: 137.6
   
   So even at minimum Atk, Phantom Force deals ~138 damage, which is 89% of Metagross's HP. That's a 2HKO at best, and likely OHKO with higher Atk.
   
   This is very dangerous. If I stay in with Metagross, Dragapult will likely OHKO or nearly OHKO me with Phantom Force.
   
   What about my options?
   - Ice Punch: 2x on Dragon/Ghost (Ice is 2x on Dragon, neutral on Ghost, so 2x overall). BP 75, 100% accuracy.
     Damage: (22 * 75 * 187 / 139) / 50 + 2 = (307,575 / 139) / 50 + 2 = 2,212.8 / 50 + 2 = 44.26 + 2 = 46.26
     STAB? No, Ice is not STAB for Steel/Psychic.
     2x super effective: 92.5
     So about 92 damage to Dragapult (163-195 HP). That's about 47-57% damage. Not a KO.
   
   - Earthquake: neutral on Dragon/Ghost. BP 100.
     (22 * 100 * 187 / 139) / 50 + 2 = (411,400 / 139) / 50 + 2 = 2,960 / 50 + 2 = 59.2 + 2 = 61.2
     No STAB, no super effective: 61 damage. About 31-37% of Dragapult's HP.
   
   - Bullet Punch: priority +1, so it goes first! BP 40, Steel type.
     Steel is neutral on Dragon/Ghost.
     (22 * 40 * 187 / 139) / 50 + 2 = (164,560 / 139) / 50 + 2 = 1,183.9 / 50 + 2 = 23.68 + 2 = 25.68
     No STAB, no super effective: ~26 damage. Very weak.
   
   - Zen Headbutt: Psychic, neutral on Dragon/Ghost. BP 80, 90% accuracy.
     (22 * 80 * 187 / 139) / 50 + 2 = (329,120 / 139) / 50 + 2 = 2,367.8 / 50 + 2 = 47.36 + 2 = 49.36
     No STAB: ~49 damage. About 25-30%.
   
   So my best damage option is Ice Punch at ~92 damage (47-57% of Dragapult). But Dragapult will likely OHKO me with Phantom Force.
   
   Wait, but Dragapult is at 90% HP. If I use Ice Punch, I deal ~92 damage. Dragapult's HP range is 163-195. At 90%, that's 146.7-175.5 HP. After 92 damage: 54.7-83.5 HP remaining. So Dragapult survives.
   
   Then Dragapult uses Phantom Force and likely OHKOs me.
   
   So if I stay in with Metagross, I'll likely die this turn.
   
   Alternative: Switch to Weavile.
   - Weavile is Dark/Ice, 194 Spe (outpaces Dragapult)
   - Weavile has Ice Shard (priority +1, Ice, BP 40) - 2x on Dragon
   - Weavile has Night Slash (Dark, BP 70) - neutral on Dragon/Ghost
   - Weavile has Knock Off (Dark, BP 65) - neutral on Dragon/Ghost, removes item
   - Weavile has Swords Dance
   
   If I switch to Weavile:
   - Weavile at 194 Spe outpaces Dragapult (145-213). Actually, Dragapult could be up to 213 Spe, so it might outspeed Weavile. But Weavile's Ice Shard is priority +1, so it always goes first.
   
   If Weavile uses Ice Shard: BP 40, 2x on Dragon, STAB (Ice is STAB for Dark/Ice), Life Orb 1.3x.
   (22 * 40 * 172 / 139) / 50 + 2 = (151,360 / 139) / 50 + 2 = 1,088.9 / 50 + 2 = 21.78 + 2 = 23.78
   STAB 1.5: 35.67
   Life Orb 1.3: 46.37
   2x super effective: 92.74
   
   So about 93 damage. Dragapult at 90% (146.7-175.5 HP) would be at 53.7-82.5 HP after. Not a KO.
   
   Then Dragapult uses Phantom Force on Weavile. Ghost is neutral on Dark/Ice. 
   (22 * 90 * 170 / 85) / 50 + 2 = (336,600 / 85) / 50 + 2 = 3,960 / 50 + 2 = 79.2 + 2 = 81.2
   STAB 1.5: 121.8
   Life Orb 1.3: 158.3
   Neutral: 158.3
   
   Weavile has 145 HP. So Phantom Force would deal ~158 damage, which OHKOs Weavile!
   
   Hmm, that's bad too.
   
   What about Knock Off? It removes Life Orb! That's huge.
   Knock Off: Dark, BP 65, neutral on Dragon/Ghost.
   (22 * 65 * 172 / 139) / 50 + 2 = (245,980 / 139) / 50 + 2 = 1,769.6 / 50 + 2 = 35.39 + 2 = 37.39
   No STAB (Dark is STAB for Dark/Ice!): 37.39 * 1.5 = 56.09
   Life Orb 1.3: 72.9
   Neutral: ~73 damage.
   
   So Knock Off deals ~73 damage AND removes Life Orb. Then Dragapult's Phantom Force without Life Orb:
   (22 * 90 * 170 / 85) / 50 + 2 = 81.2
   STAB 1.5: 121.8
   No Life Orb: 121.8
   
   Weavile at 145 HP would be at 23.2 HP. Survives!
   
   But wait, I need to think about whether Dragapult would use Phantom Force or Draco Meteor. With -2 SpA, Draco Meteor is much weaker. Let me calculate:
   Draco Meteor: Dragon/Special, BP 130, STAB, -2 SpA.
   SpA at -2: if base SpA is 108-167, at -2 it's 1/4 of that: 27-41.75.
   (22 * 130 * 40 / 112) / 50 + 2 = (114,400 / 112) / 50 + 2 = 1,021.4 / 50 + 2 = 20.43 + 2 = 22.43
   STAB 1.5: 33.6
   Life Orb 1.3: 43.7
   2x super effective (Dragon on... wait, Dragon is neutral on Dark/Ice): 43.7
   
   So Draco Meteor would only deal ~44 damage to Weavile. Much less threatening.
   
   So the opponent's best option against Weavile is Phantom Force.
   
   Strategy: Switch to Weavile, use Knock Off to remove Life Orb. Then Dragapult's Phantom Force deals ~122 damage to Weavile (145 HP), leaving Weavile at ~23 HP. Next turn, Weavile can use Ice Shard or Night Slash to finish off Dragapult.
   
   Actually wait - if Weavile is at 23 HP, can it survive another hit? Probably not. But if Dragapult is at ~100 HP (after Knock Off's 73 damage from 146.7-175.5), Weavile's Ice Shard (93 damage) or Night Slash would finish it.
   
   Night Slash: Dark, BP 70, STAB, Life Orb.
   (22 * 70 * 172 / 139) / 50 + 2 = (264,280 / 139) / 50 + 2 = 1,899.9 / 50 + 2 = 37.99 + 2 = 39.99
   STAB 1.5: 60
   Life Orb 1.3: 78
   Neutral: ~78 damage.
   
   So if Dragapult is at ~73-102 HP after Knock Off, Night Slash (78) would KO it if it's at 78 or below. If it's at 102, it survives at 24 HP.
   
   Ice Shard (93 damage) would definitely KO Dragapult if it's at 93 or below.
   
   Hmm, this is getting complicated. Let me think about the best plan.
   
   Option A: Stay with Metagross, use Ice Punch.
   - Ice Punch deals ~92 damage to Dragapult (at 90%: 146.7-175.5 → 54.7-83.5 HP)
   - Dragapult uses Phantom Force (2x on Metagross): ~138-183 damage → OHKO Metagross
   - Result: Metagross dies, Dragapult at ~55-83 HP
   
   Option B: Switch to Weavile, use Knock Off.
   - Knock Off deals ~73 damage and removes Life Orb (Dragapult: 146.7-175.5 → 73.7-102.5 HP)
   - Dragapult uses Phantom Force (neutral on Weavile, no Life Orb): ~122 damage → Weavile at ~23 HP
   - Result: Weavile at ~23 HP, Dragapult at ~74-102 HP, no Life Orb
   - Next turn: Weavile can KO Dragapult with Ice Shard (93) or Night Slash (78)
   
   Option C: Switch to Weavile, use Ice Shard.
   - Ice Shard deals ~93 damage (Dragapult: 146.7-175.5 → 53.7-82.5 HP)
   - Dragapult uses Phantom Force (neutral, with Life Orb): ~158 damage → Weavile OHKO'd (145 HP)
   - Result: Weavile dies, Dragapult at ~54-82 HP
   
   Option D: Stay with Metagross, use Bullet Punch (priority).
   - Bullet Punch goes first, deals ~26 damage (Dragapult: 146.7-175.5 → 120.7-149.5 HP)
   - Dragapult uses Phantom Force: ~138-183 damage → OHKO Metagross
   - Result: Metagross dies, Dragapult at ~121-150 HP
   
   Option B seems best strategically. Weavile survives (barely) and Dragapult loses its Life Orb. Next turn Weavile can finish Dragapult.
   
   But wait - there's a risk. If Dragapult's Atk is at the higher end, Phantom Force might OHKO Weavile. Let me recalculate:
   At Atk 189: (22 * 90 * 189 / 85) / 50 + 2 = (373,380 / 85) / 50 + 2 = 4,392.7 / 50 + 2 = 87.85 + 2 = 89.85
   STAB 1.5: 134.8
   No Life Orb: 134.8
   
   Weavile at 145 HP → 10.2 HP. Still survives!
   
   At Atk 126: (22 * 90 * 126 / 85) / 50 + 2 = (249,480 / 85) / 50 + 2 = 2,935.1 / 50 + 2 = 58.7 + 2 = 60.7
   STAB 1.5: 91.05
   No Life Orb: 91.05
   
   Weavile at 145 HP → 53.95 HP. Survives comfortably.
   
   So Weavile always survives Phantom Force without Life Orb. 
   
   And next turn, Weavile (at 10-54 HP) can use Ice Shard (93 damage) to KO Dragapult (at 74-102 HP). Ice Shard is priority, so it goes first regardless of speed.
   
   This is the best plan! Switch to Weavile and use Knock Off.
   
   Wait, but I can only do one action per turn. If I switch to Weavile, I can't also use Knock Off on the same turn. In Pokémon Showdown, switching is the action for that turn.
   
   So if I switch to Weavile this turn:
   - Weavile comes in
   - Dragapult uses Phantom Force (with Life Orb): ~158 damage → Weavile OHKO'd (145 HP)
   
   That's bad! Weavile dies to Phantom Force with Life Orb.
   
   So I can't just switch. I need to either:
   1. Stay with Metagross and take the hit (Metagross dies to Phantom Force)
   2. Switch to Weavile (Weavile dies to Phantom Force with Life Orb)
   
   Hmm, both options result in my active Pokémon dying this turn.
   
   Wait, let me reconsider. Is there any way to prevent Dragapult from OHKOing?
   
   Actually, let me reconsider the damage calculations more carefully.
   
   Metagross Def: 150 (given in the stats)
   Weavile Def: 85 (given in the stats)
   
   Phantom Force on Metagross (2x, STAB, Life Orb):
   Let's use Atk 150 (mid-range):
   (22 * 90 * 150 / 150) / 50 + 2 = (297,000 / 150) / 50 + 2 = 1,980 / 50 + 2 = 39.6 + 2 = 41.6
   STAB 1.5: 62.4
   Life Orb 1.3: 81.1
   2x: 162.3
   
   Metagross HP: 155. So 162 > 155. OHKO.
   
   Phantom Force on Weavile (neutral, STAB, Life Orb):
   (22 * 90 * 150 / 85) / 50 + 2 = (297,000 / 85) / 50 + 2 = 3,494.1 / 50 + 2 = 69.88 + 2 = 71.88
   STAB 1.5: 107.8
   Life Orb 1.3: 140.2
   Neutral: 140.2
   
   Weavile HP: 145. So 140 < 145. Weavile survives with 5 HP!
   
   Wait, that's different from my earlier calculation. Let me recheck.
   
   Earlier I used Atk 170. Let me be more careful about what Atk Dragapult has.
   
   The possible range is 126-189. I don't know the exact value. Let me check both extremes:
   
   At Atk 126:
   (22 * 90 * 126 / 85) / 50 + 2 = (249,480 / 85) / 50 + 2 = 2,935.06 / 50 + 2 = 58.7 + 2 = 60.7
   STAB 1.5: 91.05
   Life Orb 1.3: 118.4
   Weavile at 145 → 26.6 HP. Survives.
   
   At Atk 189:
   (22 * 90 * 189 / 85) / 50 + 2 = (373,380 / 85) / 50 + 2 = 4,392.7 / 50 + 2 = 87.85 + 2 = 89.85
   STAB 1.5: 134.8
   Life Orb 1.3: 175.2
   Weavile at 145 → -30.2 HP. OHKO'd!
   
   So it depends on Dragapult's Atk. If Atk is above about 160, Weavile gets OHKO'd. If below, it survives.
   
   Hmm, this is risky. Let me think about what's more likely.
   
   Actually, in Pokémon Champions, the stats are rolled within the range. A typical physical Dragapult might have Atk in the 150-180 range. This is a coin flip.
   
   Let me reconsider my options:
   
   Option A: Stay with Metagross, use Ice Punch.
   - Ice Punch: ~92 damage (Dragapult at 90%: 146.7-175.5 → 54.7-83.5 HP)
   - Dragapult Phantom Force: OHKO Metagross (162+ damage vs 155 HP)
   - Result: Metagross dies, Dragapult at 55-83 HP, still has Life Orb
   - Next: Weavile comes in, can KO Dragapult with Ice Shard (93 damage) if Dragapult is at 93 or below
   
   Actually wait, if Dragapult is at 55-83 HP, Weavile's Ice Shard (93 damage) would KO it! And Ice Shard is priority, so even if Dragapult is faster, Weavile's Ice Shard goes first.
   
   So the plan would be:
   Turn 3: Metagross uses Ice Punch → Dragapult at 55-83 HP
   Turn 3: Dragapult uses Phantom Force → Metagross OHKO'd
   Turn 4: Weavile comes in, uses Ice Shard → Dragapult KO'd
   
   This works! The only question is whether Dragapult would use Phantom Force or something else. With -2 SpA, Draco Meteor is very weak, so Phantom Force is its best option.
   
   But wait - what if Dragapult has a different move? It has revealed Draco Meteor and Phantom Force. It might have other moves too (like Dragon Dance, U-turn, etc.). But given what we've seen, Phantom Force is the most likely choice.
   
   Option B: Switch to Weavile.
   - Weavile comes in
   - Dragapult uses Phantom Force: 118-175 damage to Weavile (145 HP)
   - If Atk < ~160: Weavile survives at 5-27 HP
   - If Atk > ~160: Weavile OHKO'd
   - If Weavile survives: next turn it can use Knock Off (removes Life Orb) or Ice Shard
   
   This is riskier because Weavile might die.
   
   Option A seems safer because:
   1. Metagross is guaranteed to die (we accept this)
   2. Dragapult is guaranteed to be at 55-83 HP after Ice Punch
   3. Weavile's Ice Shard (93 damage, priority) will definitely KO Dragapult next turn
   
   The only risk with Option A is if Dragapult doesn't use Phantom Force (maybe it switches, or uses a different move). But even if it switches, we've weakened it and can deal with the new Pokémon.
   
   Actually, wait. What if Dragapult switches? Then we've used our Ice Punch for 92 damage on a Pokémon that's leaving, and we lose Metagross for nothing. But that's still better than losing Metagross AND Weavile.
   
   I think Option A (stay with Metagross, use Ice Punch) is the best choice. It guarantees Dragapult is weakened to a range where Weavile's priority Ice Shard can finish it off.
   
   Let me also consider: what if I use Earthquake instead? It's neutral (61 damage) vs Ice Punch (92 damage, 2x). Ice Punch is clearly better.
   
   What about Zen Headbutt? 49 damage, 90% accuracy. Worse than Ice Punch.
   
   So my decision: MOVE: icepunch
   
   This deals ~92 damage to Dragapult (bringing it to 55-83 HP), then Dragapult will likely OHKO Metagross with Phantom Force. Next turn, Weavile comes in and KOs Dragapult with Ice Shard.
   

5. Turn 4
   Mercury Decide used Shadowball2,201 tok · 0.7 s · $0.0000

   50% MOVE: shadowball, 18% MOVE: phantomforce, 14% SWITCH: garchomp

   Qwen3.8 27B used Icepunch4,790 tok · 12.3 s · $0.0028

   Mega Garchomp fainted T1. Metagross at 30/155 HP. Dragapult at 6% HP, -2 SpA, Life Orb. Dragapult WILL faint from Life Orb recoil after any damaging move (6% ≈ 10-12 HP, recoil ≈ 16-20 HP). Using Ice Punch: Dragapult moves first with Phantom Force (2x on Metagross) → Metagross faints, then Ice Punch KOs Dragapult. Weavile comes in at 100% HP. Best outcome for Weavile's health.

   Reasoning trace (1,068 words)

   Let me analyze the situation:
   
   - My Metagross is at 30/155 HP (19.4%)
   - Dragapult is at 6% HP with -2 SpA, Life Orb
   - Dragapult moves first (145-213 Spe vs my 134 Spe)
   
   If I stay with Metagross:
   - Dragapult will use Phantom Force (Ghost/Physical, 90 BP) - super effective on Metagross (Ghost vs Psychic = 2x)
   - With Life Orb, that's likely to OHKO my Metagross at 30 HP
   - Then I'd switch to Weavile next turn, and Weavile's Ice Shard (priority) would KO the 6% Dragapult
   
   If I switch to Weavile now:
   - Weavile is at 100% HP
   - Dragapult at 6% HP will use Phantom Force (Ghost/Physical, 90 BP)
   - Weavile is Dark/Ice - Ghost is neutral on Dark, and Ghost is neutral on Ice. So Phantom Force is neutral on Weavile.
   - Wait, let me check: Ghost vs Dark = neutral (1x), Ghost vs Ice = neutral (1x). So Phantom Force is neutral on Weavile.
   - With Life Orb and -2 SpA (doesn't matter for physical), Phantom Force at 90 BP neutral on Weavile...
   - Weavile has 145 HP, 85 Def. Even with a strong Dragapult (189 Atk max), Phantom Force with Life Orb: 90 * 1.3 * (Atk/Def factor) * 2 (STAB) / 50 + 2... Let me estimate.
   - Actually, Dragapult at 6% HP - if it uses Phantom Force, it takes Life Orb recoil (1/10 max HP). If Dragapult has ~195 max HP, that's ~19.5 HP lost. At 6% of 195 = ~12 HP. So it would faint from recoil!
   - Wait, 6% of 195 = 11.7 HP. Life Orb recoil is 1/10 of max HP = 19.5 HP. So yes, Dragapult would faint from Life Orb recoil after using Phantom Force!
   
   So if I switch to Weavile:
   - Dragapult uses Phantom Force (neutral on Weavile)
   - Weavile takes some damage but survives (145 HP, 85 Def, neutral hit)
   - Dragapult faints from Life Orb recoil (6% HP = ~12 HP, recoil = ~19.5 HP)
   - Weavile is at maybe 70-80% HP, ready to sweep
   
   This is the best option! Switch to Weavile.
   
   Actually wait - let me reconsider. If I use Ice Punch:
   - Ice Punch is super effective (2x) on Dragon/Ghost
   - 75 BP * 2 (STAB? No, Ice is not STAB for Metagross) * 2 (super effective) = 150 effective BP
   - Metagross at 187 Atk vs Dragapult at 85-139 Def
   - This would definitely KO Dragapult at 6% HP
   - But Dragapult moves first and uses Phantom Force (2x on Metagross)
   - Metagross at 30 HP will almost certainly faint to Phantom Force with Life Orb
   
   So the sequence would be:
   1. Dragapult uses Phantom Force → Metagross faints
   2. Metagross uses Ice Punch → Dragapult faints
   
   Both faint. Then I bring in Weavile at 100% HP. That's actually fine too!
   
   But if I switch to Weavile:
   1. Dragapult uses Phantom Force → Weavile takes neutral damage (survives)
   2. Dragapult faints from Life Orb recoil
   3. Weavile is at maybe 70-80% HP
   
   This is better because Weavile survives with more HP than if it had to come in after both fainted (well, it would be at 100% in that case too).
   
   Wait, actually if both faint, Weavile comes in at 100%. If I switch now, Weavile takes a neutral Phantom Force hit and survives at maybe 70-80%.
   
   So actually, staying with Metagross and letting both faint might be better for Weavile's HP!
   
   But wait - there's a risk. What if Dragapult doesn't use Phantom Force? What if it uses something else? We know it has Draco Meteor and Phantom Force. At -2 SpA, Draco Meteor would be weak. It probably has 2 more moves. Could it have a move that doesn't cause recoil? Like Dragon Dance or something?
   
   Actually, the key question is: will Dragapult definitely faint from Life Orb recoil? At 6% HP with max HP range 163-195:
   - 6% of 163 = 9.8 HP
   - 6% of 195 = 11.7 HP
   - Life Orb recoil: 1/10 of max HP = 16.3 to 19.5 HP
   
   So yes, in all cases, the recoil (16.3-19.5) exceeds current HP (9.8-11.7). Dragapult WILL faint from recoil after any attack.
   
   So the safest play is:
   - Option A: Switch to Weavile. Dragapult attacks (neutral on Weavile), Weavile survives, Dragapult faints from recoil. Weavile at ~70-80%.
   - Option B: Use Ice Punch. Dragapult attacks first (Phantom Force, 2x on Metagross), Metagross faints. Ice Punch KOs Dragapult. Weavile comes in at 100%.
   
   Option B is better for Weavile's HP! But there's a small risk: what if Dragapult has a move that doesn't cause recoil? No, all damaging moves cause Life Orb recoil. Status moves don't. Could Dragapult use a status move? It has Draco Meteor and Phantom Force revealed. It could have Dragon Dance, Roost, or something else.
   
   If Dragapult uses a status move (like Dragon Dance), then:
   - Option A: Weavile is safe, Dragapult is still at 6% and can be KO'd next turn
   - Option B: Metagross survives (no damage), can use Ice Punch next turn to KO
   
   Both options work fine if Dragapult uses a status move.
   
   If Dragapult uses a damaging move:
   - Option A: Weavile takes neutral hit, survives, Dragapult faints from recoil
   - Option B: Metagross faints to Phantom Force (2x), Ice Punch KOs Dragapult
   
   I think Option B (use Ice Punch) is slightly better because:
   1. Weavile comes in at 100% HP
   2. Even if Dragapult uses a status move, Metagross survives and can KO next turn
   3. The only downside is Metagross faints, but it's already at 19% HP and would faint anyway
   
   Actually, let me reconsider. If I use Ice Punch and Dragapult uses Phantom Force:
   - Phantom Force is 2x on Metagross (Ghost vs Psychic)
   - Metagross at 30 HP, 150 Def (with Light Metal, effective Def is... wait, Light Metal halves weight, not Def. It just makes Metagross lighter, affecting things like Gravity, Heat Wave, etc. It doesn't change Def stat.)
   - So Metagross has 150 Def. Phantom Force with Life Orb, 90 BP, 2x STAB, 2x super effective = 90 * 1.3 * 2 * 2 / 50 + 2 = 93.6 + 2 ≈ 95 damage (rough estimate)
   - Metagross at 30 HP will definitely faint.
   
   So the outcome is: both faint, Weavile comes in at 100%. This is the best outcome.
   
   Let me go with Ice Punch.
   

   Qwen3.8 27B switched to Weavile

   Incident report

   Only one legal action: played without asking.

   Mercury Decide switched to Garchomp1,876 tok · 0.6 s · $0.0000

   56% SWITCH: garchomp, 44% SWITCH: rotomwash

6. Turn 5
   Mercury Decide used Stoneedgemega2,570 tok · 0.7 s · $0.0001

   70% MOVE: stoneedge [MEGA], 11% MOVE: stoneedge, 10% MOVE: earthquake [MEGA]

   Qwen3.8 27B used Iceshard4,037 tok · 7.0 s · $0.0016

   Weavile at 100% HP vs Garchomp at 100%. Ice Shard is 4x super effective (Ice vs Dragon/Ground) with priority +1 and Life Orb. Should OHKO or near-OHKO Garchomp. Best option by far. 1 more Pokémon to bring in from Scizor/Metagross/Rotom-Wash/Toxapex. Opponent also has 1 more to bring.

   Reasoning trace (464 words)

   Let me analyze the situation:
   
   - Weavile is active at 100% HP with Life Orb
   - Opponent's Garchomp is active at 100% HP
   - I have 1 more Pokémon to bring in (from Scizor, Metagross, Rotom-Wash, Toxapex)
   - Opponent has 1 more Pokémon to bring in (from Scizor, Metagross, Rotom-Wash, Toxapex)
   
   Weavile's options:
   1. Ice Shard - 4x super effective on Garchomp (Ice vs Dragon/Ground). With Life Orb, this is a priority move. Let me calculate: 40 BP * 4 (super effective) * 1.3 (Life Orb) = 208 effective BP. Weavile has 172 Atk. Garchomp has 103-161 Def. This should deal massive damage, likely OHKO or near-OHKO.
   
   2. Nightslash - Dark, not very effective on Garchomp (neutral). 70 BP * 1.3 = 91 effective BP.
   
   3. Knockoff - Dark, neutral on Garchomp. 65 BP * 1.3 = 84.5 effective BP. Also removes item.
   
   4. Swords Dance - Set up for later.
   
   The best play here is clearly Ice Shard. It's 4x super effective on Garchomp (Ice vs Dragon/Ground), has priority +1, and with Life Orb it should deal enormous damage. Let me estimate:
   
   Weavile Atk: 172
   Garchomp Def: 103-161 (let's say around 130 for a balanced build)
   
   Damage formula: ((2*50/5+2) * 40 * 172/130) / 50 + 2 = (4 * 40 * 1.323) / 50 + 2 = 211.7/50 + 2 = 4.23 + 2 = 6.23... wait let me redo this.
   
   Actually the damage formula is:
   ((2*Level/5 + 2) * Power * (Atk/Def)) / 50 + 2
   
   = ((2*50/5 + 2) * 40 * (172/130)) / 50 + 2
   = (22 * 40 * 1.323) / 50 + 2
   = 1160.1 / 50 + 2
   = 23.2 + 2
   = 25.2
   
   Then multiply by STAB (Ice on Ice-type Weavile): 25.2 * 1.5 = 37.8
   Then super effective (4x): 37.8 * 4 = 151.2
   Then Life Orb: 151.2 * 1.3 = 196.6
   
   Garchomp HP: 183-215. So this would likely OHKO or come very close.
   
   Even with max Def (161):
   = (22 * 40 * (172/161)) / 50 + 2
   = (22 * 40 * 1.068) / 50 + 2
   = 940.3 / 50 + 2
   = 18.8 + 2
   = 20.8
   * 1.5 (STAB) = 31.2
   * 4 (super effective) = 124.8
   * 1.3 (Life Orb) = 162.2
   
   Garchomp max HP is 215, so it might not OHKO with max Def. But with lower Def it would.
   
   Either way, Ice Shard is the best option. It's priority, 4x super effective, and should either OHKO or heavily damage Garchomp. Even if it doesn't KO, it deals massive damage and we can follow up.
   
   The only concern is that Garchomp might have a move that hits Weavile hard. But Ice Shard has priority +1, so it goes first regardless.
   
   I'll go with Ice Shard.