Matches · 2026-10-10 · rules version c4
Mercury Decide vs DeepSeek V4.1 Flash
Mercury Decide won in 9 turns · 2 min wall clock · 46,635 tokens · $0.014
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Decisions
- Team previewMercury Decide brought
Dragapult,garchomp,metagrossLead: 34% BRING: dragapult, 21% BRING: metagross, 18% BRING: garchomp Pick 2: 39% BRING: garchomp, 34% BRING: metagross, 14% BRING: scizor Pick 3: 59% BRING: metagross, 22% BRING: scizor, 13% BRING: rotomwash
DeepSeek V4.1 Flash broughtGlimmora,gholdengo,dragoniteGlimmora is the best lead with Focus Sash to set Stealth Rock and Spikes. Gholdengo blocks Defog and Rapid Spin with Good as Gold, and hits hard with Make It Rain. Dragonite with Multiscale and Dragon Dance is a strong late-game win condition against their bulky team.
Reasoning trace (176 words)
We need to pick 3 Pokémon to bring. Opponent has Garchomp, Scizor, Metagross, Rotom-Wash, Dragapult, Toxapex. Key threats: Garchomp, Dragapult (fast), Toxapex (defensive). Glimmora with Focus Sash sets hazards, good lead. Gholdengo blocks Defog and has Good as Gold blocking status. Dragonite with Multiscale. Kingambit with Sucker Punch. Garganacl with Salt Cure. Best core: Glimmora lead for hazards, Gholdengo to block removal and hit hard, Dragonite as late-game sweeper with Dragon Dance. Kingambit is also great. Dragapult is faster than all ours except maybe Glimmora is 151 speed, Dragapult can be up to 213. Glimmora speed 151. Gholdengo 149. Let's go Glimmora lead, Gholdengo, Dragonite. Actually Kingambit with Sucker Punch handles Dragapult. But Dragonite's Extreme Speed could help. I'll bring Glimmora, Gholdengo, Dragonite. Or maybe Kingambit over Dragonite for Sucker Punch priority on fast threats. I think: Glimmora (lead, hazards), Gholdengo (special attacker, blocks defog), Kingambit (priority sweeper with sucker punch). That's solid. Actually, Dragonite's Multiscale + DD is a strong win condition too. Kingambit with Supreme Overlord needs teammates fainted. I'll go Glimmora, Gholdengo, Dragonite.
- Turn 1Mercury Decide used
Dracometeor82% MOVE: dracometeor, 9% MOVE: shadowball, 5% MOVE: phantomforce
DeepSeek V4.1 Flash usedStealthrockGlimmora's Focus Sash guarantees it survives one hit from Dragapult, so it can reliably set hazards. Stealth Rock is the most valuable entry hazard against the opponent's likely switch-ins like Scizor and Garchomp. Earth Power won't KO Dragapult, and switching wastes Glimmora's sash turn.
Reasoning trace (572 words)
We need answer. Need decide best turn. We are Glimmora vs Dragapult lead. Need choose action. Need consider format bring 6 pick 3? We have Glimmora active, bench Dragonite, Gholdengo. Opponent Dragapult, unknown set. Glimmora focus sash. Dragapult likely faster? Speed range 145-213, Glimmora 151. Dragapult base speed 142, max 213 at level 50? Actually Dragapult speed base 142, max positive 213. Common Dragapult is fast, likely 213 or 200. It may attack. Glimmora can set hazards. Dragapult may be physical or special. If physical, Toxic Debris sets toxic spikes. Focus Sash survives one hit if full. Best action likely Stealth Rock or Spikes? Need evaluate. Glimmora's role lead hazard setter. Dragapult can threaten with Shadow Ball/Draco Meteor etc. If we set Stealth Rock, then maybe survive with sash and set more later? But if Dragapult uses U-turn? Hmm. We need choose single best action. Since Glimmora has Focus Sash, can set hazards. Opponent has unrevealed team includes Garchomp, Scizor, Metagross, Rotom-Wash, Toxapex. Stealth Rock hits all except? Garchomp neutral? Scizor 4x? Metagross neutral? Rotom-Wash neutral? Toxapex neutral? Spikes hits grounded: Garchomp, Scizor, Metagross, Toxapex, Rotom-Wash (if not airborne? Rotom-Wash is Electric/Water, grounded unless Levitate? Rotom-Wash has Levitate, so not grounded). Stealth Rock generally better. But Glimmora also has Mortal Spin to remove hazards? None. Earth Power can damage Dragapult? Dragapult Dragon/Ghost, Ground immune? Ghost is immune to Ground? Actually Ghost type is immune to Normal and Fighting, not Ground. Dragon/Ghost: Ground neutral? Ground hits Ghost? Ground is not resisted by Ghost; Ghost immune to Normal/Fighting. So Earth Power neutral on Dragapult? Dragapult is Dragon/Ghost, Ground neutral. But Dragapult likely faster and can KO? Glimmora has Focus Sash, so survives one hit. Earth Power may do decent damage but not KO. Setting hazards is likely best. But need consider if Dragapult can Taunt? Unknown. If we set Stealth Rock, maybe get Taunted? Dragapult often has U-turn, Shadow Ball, Draco Meteor, Fire Blast, Thunderbolt, Will-O-Wisp, Sucker Punch? Could be physical with Dragon Darts. If physical, Toxic Debris sets Toxic Spikes. If special, no. Stealth Rock is generally best. Could switch to Gholdengo? Gholdengo is immune to Normal/Fighting, resists Dragon? Steel resists Dragon, Ghost immune to Normal/Fighting. Dragapult's Ghost moves hit Gholdengo super effectively? Ghost vs Steel? Ghost is neutral against Steel? Actually Ghost is super effective against Ghost and Psychic; Steel resists Ghost? Steel resists Ghost? In Gen 6+, Steel resists Ghost? Yes Steel resists Ghost and Dark? Wait Steel resists Normal, Flying, Rock, Bug, Steel, Grass, Ice, Psychic, Dragon, Fairy. Ghost is not resisted by Steel? Let's recall type chart: Steel defensively: resists Normal, Flying, Rock, Bug, Steel, Grass, Ice, Psychic, Dragon, Fairy. Immune to Poison. Weak to Fire, Fighting, Ground. Ghost is neutral against Steel. So Gholdengo takes neutral from Ghost, resists Dragon. But Dragapult may have Fire Blast? Not sure. Gholdengo can set up Nasty Plot? But Dragapult may be faster and can attack. Switching Gholdengo might be good to preserve Glimmora? But Glimmora's job is hazards. We need best action. Given Glimmora has Focus Sash, it can set Stealth Rock and survive. If Dragapult is physical, Toxic Debris sets Toxic Spikes. If we set Stealth Rock, we get rocks. If we set Spikes, we get one layer. Stealth Rock usually more valuable. So MOVE: stealthrock. Check legal actions: 1. MOVE: stealthrock. So answer. Need include thought 2-4 sentences. Decision exactly one action line. No extra. Ensure move_id exactly stealthrock.
- Turn 2Mercury Decide used
Shadowball38% MOVE: shadowball, 38% MOVE: phantomforce, 18% MOVE: dracometeor
DeepSeek V4.1 Flash usedSpikesGlimmora already set Stealth Rock and still holds Focus Sash, so it survives one hit and can safely add Spikes to stack hazards before Dragapult KOs it. Attacking Dragapult won't KO, and switching wastes the sash lead's hazard utility.
Reasoning trace (393 words)
We need to choose best action for Glimmora vs Dragapult. We set Stealth Rock turn 1. Dragapult used Draco Meteor and missed. Now turn 2. Glimmora has Focus Sash, full HP. We already have SR up. We could set Spikes for extra hazards, or attack with Earth Power. Dragapult is Dragon/Ghost - Earth Power is neutral? Ground vs Dragon neutral, vs Ghost neutral. Actually Ground hits Dragon neutral, Ghost neutral. So Earth Power is neutral, 90 BP special, Glimmora has 182 SpA. Dragapult likely faster? Speed range 145-213 vs Glimmora 151. If Dragapult is faster, it could KO with Draco Meteor? But it missed last turn. Focus Sash protects from one KO. Glimmora's role: hazard lead. We already set SR. Could set Spikes to pressure switches. But Dragapult may just attack. Alternatively, we could switch to Gholdengo to block Defog/spin? Gholdengo has Good as Gold, blocks status moves like Defog. But Dragapult likely attacks. Actually, Glimmora's Mortal Spin - not very effective. Earth Power could chip Dragapult. But Dragapult likely faster and could KO? Draco Meteor did miss, but if it hits, Glimmora survives with Focus Sash at 1 HP, then we could... but Glimmora is slower? Speed uncertain. Better: Set Spikes to add hazard layers while we have Focus Sash to survive one hit, then next turn maybe attack or switch. But Dragapult could just KO through Sash then we lose Glimmora after setting spikes. That's fine, hazards are valuable. Alternatively, switch to Gholdengo to block potential Defog? But opponent might just attack. Actually, Glimmora's Focus Sash means it can survive one hit, so it can set another hazard layer safely. Spikes would be good. But also Gholdengo blocks Rapid Spin? Gholdengo's Good as Gold blocks status moves, not Rapid Spin (which is attack). But Gholdengo can switch in on a predicted Draco Meteor? It's Steel/Ghost, Draco Meteor is Dragon, neutral. Not great. I think setting Spikes is best. But wait, Dragapult is likely faster. If Dragapult attacks with a physical move, Glimmora's Toxic Debris sets Toxic Spikes. But Dragapult is special attacker (Draco Meteor). So no. Could we use Earth Power to potentially KO? No, Dragapult has high HP. Earth Power won't KO. Better to set Spikes. Let's go with Spikes. But check: opponent has Stealth Rock on their side. They might switch Dragapult out? Probably not. I'll choose MOVE: spikes.
- Turn 3Mercury Decide used
Dracometeor78% MOVE: dracometeor, 15% MOVE: shadowball, 4% MOVE: phantomforce
DeepSeek V4.1 Flash switched toDragoniteGlimmora has already set Stealth Rock and Spikes, and at 43% HP it likely gets KO'd by Dragapult's Shadow Ball before it can act. Dragonite's Multiscale halves the incoming hit and it resists Draco Meteor, making it the safest pivot to preserve Glimmora.
Reasoning trace (186 words)
Glimmora at 43% with Focus Sash already broken (not full HP). Dragapult likely faster and can KO with Shadow Ball. Glimmora's job is done - hazards set. Should switch to preserve it? Actually Glimmora is low and hazards are set. Switching to Gholdengo is good - immune to Shadow Ball? No, Ghost hits Ghost super effectively. Gholdengo is Steel/Ghost, Shadow Ball is Ghost - neutral? Ghost vs Steel is neutral, Ghost vs Ghost is super effective... actually Ghost vs Steel is neutral, so Ghost vs Steel/Ghost = 2x? No: Ghost is super effective against Ghost, not very effective against Steel... Steel resists Ghost. So Ghost vs Steel/Ghost = 0.5 * 2 = 1x neutral. Gholdengo takes neutral. Better to switch to Dragonite with Multiscale to tank a hit. But hazards on our side are none. Dragonite with Multiscale takes halved damage. Actually Glimmora is nearly dead and hazards are set. Best to switch to preserve. Dragonite with Multiscale is a good pivot. Or Gholdengo. Dragapult likely has Shadow Ball/Draco Meteor. Dragonite resists both? Dragon resists Draco, Ghost neutral. Multiscale halves. Good switch. I'll switch to Dragonite.
- Turn 4Mercury Decide used
Dracometeor69% MOVE: dracometeor, 17% MOVE: phantomforce, 5% MOVE: shadowball
DeepSeek V4.1 Flash switched toGholdengoDragonite is at 25% HP and slower than Dragapult, so it likely gets KO'd by Shadow Ball or Draco Meteor before attacking. Gholdengo resists Dragon and can tank a weakened (-2 SpA) Shadow Ball at full HP while threatening back with Make It Rain/Shadow Ball. Switching preserves Dragonite's role and gains momentum.
Reasoning trace (499 words)
Dragonite at 25% HP with Multiscale broken. Dragapult at -2 SpA, but Shadow Ball is super effective and faster. Dragonite likely dies to Shadow Ball. Ice Spinner is super effective but Dragapult is faster and will KO first. Best to switch to Gholdengo who resists Shadow Ball (Ghost) and Draco Meteor. Gholdengo is immune to... no, Ghost moves are neutral... Gholdengo is Steel/Ghost, resists Dragon, immune to Normal, but weak to Ghost. Actually Ghost moves hit Ghost-type super effectively? No, Ghost vs Ghost is super effective. Hmm, Gholdengo Steel/Ghost: Ghost-type moves do 2x? Ghost is super effective against Ghost. So Shadow Ball would hit Gholdengo for 2x. Better to switch to Glimmora? Glimmora Rock/Poison - weakness to Ground, Water, Steel, Psychic. Draco Meteor resist? Rock doesn't resist Dragon. Hmm. Actually wait - Glimmora is weak to... Poison resists nothing relevant. Shadow Ball neutral on Glimmora (Ghost vs Rock/Poison = neutral? Ghost is neutral vs both). Draco Meteor neutral too. Actually let me think - do we want to preserve Dragonite or sacrifice? Dragonite is at 25% and slower. Dragapult at -2 SpA. Can Dragonite survive Shadow Ball? Multiscale gone (not full HP). Shadow Ball from Dragapult base SpA ~120 boosted by Life Orb but -2 is half. Dragonite HP 42. Could survive maybe. Ice Spinner super effective could KO? Dragapult 80% HP, Ice Spinner 80 BP from 204 Atk super effective = big damage. But Dragapult moves first and Shadow Ball likely KOs. Actually let's check: Dragonite at -2 SpA Shadow Ball from Dragapult. Base Shadow Ball 80 BP. SpA dropped -2 = 0.5x. Life Orb 1.3x. So effective ~52 BP. Against Dragonite SpD 120 with 42 HP... could survive. Draco Meteor would be resisted (Dragon vs Dragon/Flying - Dragon is super effective vs Dragon). Wait Dragon vs Dragon/Flying: Dragon is 2x vs Dragon type. So Draco Meteor is 2x. That would kill. But with -2 SpA Draco Meteor still strong. Dragonite is likely dead either way. Safest: switch to Gholdengo. But Gholdengo is 2x weak to Shadow Ball too. Hmm. Actually Gholdengo has 111 SpD and full HP. Shadow Ball at -2 SpA and Ghost vs Ghost 2x... let me estimate: 80*1.3*0.5*2 = 104 BP effective vs 111 SpD. Could tank one hit at full HP. Draco Meteor against Gholdengo: Dragon vs Steel = 0.5x, so resisted. Good. Glimmora resists nothing here but has Focus Sash gone (took damage). Glimmora survives? 69 HP. I think Gholdengo is the best switch - resists Dragon, can recover, and Shadow Ball is only 2x from a -2 SpA Dragapult. Actually wait, is it better to just attack? Ice Spinner hits Dragapult super effectively. If Dragonite survives Shadow Ball, we could KO. But risky. Given the state, switching to Gholdengo seems safest. Actually Gholdengo sets up Nasty Plot or uses Shadow Ball. Hmm, let me reconsider. Dragapult at -2 SpA only if it uses Shadow Ball. Draco Meteor already used on turn 3. Cursed Body possible. I'll go with switch to Gholdengo.
- Turn 5Mercury Decide used
Phantomforce82% MOVE: phantomforce, 8% MOVE: shadowball, 7% SWITCH: garchomp
DeepSeek V4.1 Flash usedShadowballDragapult is at -4 SpA, so its attacks are heavily weakened and can't threaten Gholdengo much. Shadow Ball is super effective on Dragapult's Ghost typing and Gholdengo likely outspeeds or survives any hit, so attacking now is best.
Reasoning trace (67 words)
Dragapult at -4 SpA, Life Orb. Shadow Ball is super effective on Dragapult (Ghost vs Ghost/Dragon). Gholdengo likely outspeeds? Speed range 145-213, uncertain. Shadow Ball should do solid damage. Dragapult's Draco Meteor at -4 is weak now. Best to attack with Shadow Ball. Actually could Dragapult be faster? If it is, its Shadow Ball/Draco at -4 won't KO Gholdengo. So attacking is safe. Shadow Ball super effective.
- Turn 6Mercury Decide used
Phantomforce100% MOVE: phantomforce
DeepSeek V4.1 Flash usedShadowballDragapult is at 70% and its SpA is at -4, so its special attacks are harmless. Shadow Ball is super effective and should KO it, and even if Phantom Force strikes first, Gholdengo survives the physical hit and KOs back.
Reasoning trace (336 words)
Dragapult used Phantom Force last turn, so it's currently semi-invulnerable (vanished). It will hit Gholdengo this turn with Phantom Force. Gholdengo's Shadow Ball missed last turn because of Phantom Force's invulnerability. This turn, Dragapult will strike with Phantom Force (Ghost physical). Gholdengo is Ghost/Steel — Ghost is neutral on Steel? Ghost vs Steel is neutral (Steel resists... actually Ghost is not very effective vs Steel? No: Ghost vs Steel = 0.5x? Let me recall: Steel resists Ghost? No, Steel does NOT resist Ghost. Ghost is neutral vs Steel. Ghost vs Ghost is super effective. So Phantom Force (Ghost) vs Gholdengo (Steel/Ghost) = 2x super effective. That could hurt. But Dragapult has -4 SpA, so its special attacks are weak. Phantom Force is physical though, unaffected by SpA drops. Dragapult's physical attack is decent. Key: can Gholdengo KO? Dragapult at 70% HP, ~163-195 max HP, so ~114-136 HP remaining. Shadow Ball from Gholdengo (185 SpA, wiseglasses 1.1x, STAB, super effective 2x) — that's a strong hit. Shadow Ball BP 80, STAB 1.5, SE 2x, wiseglasses 1.1 = 80*1.5*2*1.1 = 264 effective. Dragapult's SpD is low (85-139). This likely KOs. But wait — Phantom Force: on the turn it strikes, does it hit before Gholdengo moves? Phantom Force has no priority; it's a two-turn move. On the strike turn, Dragapult attacks with normal priority. Speed matters. Gholdengo 149 vs Dragapult 145-213. Uncertain. Actually, if Dragapult is faster, it hits Gholdengo with Phantom Force first. Gholdengo at 132/164. Phantom Force physical from Dragapult with Life Orb 1.3x, STAB, 2x SE... could do significant damage but Dragapult's Atk is 126-189, likely uninvested (it's a special attacker). So physical Phantom Force might not KO. Best play: Shadow Ball to KO Dragapult. It's super effective and Gholdengo has high SpA. Even if Dragapult moves first, Gholdengo likely survives and KOs back. Alternatively, Make It Rain — Steel, but Dragapult resists? Dragon doesn't resist Steel. Steel vs Dragon = neutral, vs Ghost = neutral. Shadow Ball is better (SE). Go with Shadow Ball.
DeepSeek V4.1 Flash switched toGlimmoraDragapult's Phantom Force is physical and would easily KO the 25% Dragonite, while Glimmora's Focus Sash guarantees it survives one hit. Glimmora also outspeeds many Dragapult spreads and can chip back with Earth Power, so it's the safer pivot.
Reasoning trace (316 words)
Dragapult at -4 SpA, so its special moves are weak. But Phantom Force is physical and just KO'd Gholdengo. We need to bring in something. Dragonite at 25% with Multiscale broken? Multiscale only works at full HP. Dragonite would take Phantom Force... Dragapult is faster (145-213 speed vs Dragonite 132). Phantom Force is physical, would likely KO Dragonite. Glimmora: Rock/Poison, weak to Ghost? No, Ghost is neutral on Rock/Poison. Actually Ghost vs Rock = neutral, vs Poison = neutral. So Phantom Force neutral. Glimmora has 69 HP, could survive? Dragapult's Phantom Force physical - Glimmora's defense 110. Hmm. Actually Glimmora is faster? Glimmora speed 151, Dragapult 145-213. Uncertain. Better to bring Glimmora - it can set hazards or attack. Actually Glimmora resists nothing here. But Dragonite at 25% would die to Phantom Force. Glimmora has Focus Sash - could survive one hit. And it can set Stealth Rock or attack with Mortal Spin/Earth Power. Earth Power is super effective vs Dragapult? Ground vs Dragon = neutral, vs Ghost = neutral. No. Actually Glimmora's best play: it survives with Focus Sash, sets hazards. But opponent already has hazards on their side... wait, "Opponent side hazards" means hazards on opponent's side. So Stealth Rock and Spikes are already set on opponent's side. So Glimmora doesn't need to set them. Hmm, so Glimmora should attack. Mortal Spin is Poison physical, weak. Earth Power neutral. Actually, let me reconsider. Dragapult is at -4 SpA, so its special attacks are very weak. Phantom Force is physical though. Dragonite at 25% - would die. Glimmora with Focus Sash survives one hit. Glimmora is the better switch. Let me pick Glimmora. Actually wait - can Glimmora outspeed? Dragapult speed range 145-213. Glimmora 151. If Dragapult is max speed (213), it outspeeds. If not, Glimmora might outspeed. Uncertain. Glimmora with Focus Sash survives, then can attack. Earth Power does decent damage. Let's go Glimmora.
- Turn 7Mercury Decide used
Phantomforce71% MOVE: phantomforce, 18% SWITCH: garchomp, 7% SWITCH: metagross
DeepSeek V4.1 Flash usedEarthpowerOpponent's side already has SR + Spikes, so setting hazards is wasted. Dragapult is at -4 SpA so its special moves are weak, but Phantom Force is physical and could KO Glimmora at 43%. Best to hit Dragapult hard with Earth Power for chip/damage rather than risk a wasted turn.
Reasoning trace (276 words)
Glimmora at 43% HP with Focus Sash still full? Focus Sash only works at full HP, and Glimmora is at 69/160, so sash is useless. Dragapult has SpA -4, so special attacks are weak. But Phantom Force is physical and could KO. Earth Power from Glimmora against Dragapult... Dragapult is weak to Ground? No, Dragon/Ghost. Earth Power is neutral-ish, Ghost/Dragon resists? No, Ground hits Dragon neutral, Ghost neutral. Actually Ground vs Dragon neutral, vs Ghost neutral — so neutral. Dragapult has SpA -4 so Draco Meteor/Shadow Ball are weak now. Phantom Force is only physical (90 BP + Life Orb). Glimmora likely survives one Phantom Force? Glimmora 110 Def, 69 HP. Phantom Force from Dragapult ~ probably KOs since super effective. Actually Phantom Force Ghost vs Rock/Poison — neutral? Ghost vs Rock: neutral, vs Poison: neutral. So it's 90 BP neutral physical with Life Orb. Might KO Glimmora at 43%. Better: Dragonite at 25% with Multiscale broken? Multiscale only works at full HP. So no. Hmm best play: set hazards? Opponent already has SR + Spikes on their side? Wait "Opponent side hazards" = Stealth Rock, Spikes (from Glimmora's toxic debris). Wait, opponent side has SR and Spikes already. Actually the hazards are on opponent's side. So no need to set more. Glimmora's best move is Earth Power to chip Dragapult. Opponent Dragapult is weak physically with SpA drops. Earth Power probably does decent damage. Actually, wait — the opponent has hazards on their side already (SR, Spikes), so setting more isn't useful. Choice: Earth Power for damage. Or Mortal Spin to poison and clear own side (but our side has none). Earth Power it is.
- Turn 8Mercury Decide used
Phantomforce100% MOVE: phantomforce
DeepSeek V4.1 Flash usedEarthpowerDragapult is faster and its Phantom Force will KO Glimmora regardless, but Glimmora has no better option than attacking. Earth Power is the strongest hit and Dragapult's SpA is at -4, so its special moves are weakened. Staying in and firing Earth Power maximizes damage before Glimmora falls.
Reasoning trace (75 words)
Glimmora is at 43%, no longer has Focus Sash active (used). Dragapult likely outspeeds and Phantom Force hits. Earth Power is Glimmora's best damage option. Actually, dragapult has -4 SPA, so its special attacks are weak. Phantom Force is physical, which would trigger Toxic Debris. But Dragapult is faster likely. Earth Power does good damage. Let's just use Earth Power. Actually, mortalspin is not very effective. Earth Power is best. Let's go with Earth Power.
DeepSeek V4.1 Flash switched toDragoniteGlimmora fainted, so the only legal action is bringing in Dragonite. It's at 25% HP but Multiscale gives it a chance to survive a hit and threaten with Extreme Speed.
Reasoning trace (9 words)
Glimmora fainted, only Dragonite available. Must switch in Dragonite.
- Turn 9Mercury Decide used
Dracometeor42% MOVE: dracometeor, 33% MOVE: phantomforce, 16% SWITCH: garchomp
DeepSeek V4.1 Flash usedIcespinnerDragapult is faster and Dragonite is at 25% HP, so I likely get KO'd first. But Extreme Speed doesn't affect Ghost-types, and Ice Spinner is my only super-effective hit that can potentially KO Dragapult. It's the best play.
Reasoning trace (121 words)
Dragonite at 25% HP, Dragapult at 50% with -4 SpA. Dragapult is faster. Ice Spinner is super effective and would likely KO Dragapult. But Dragapult moves first and could KO Dragonite with Phantom Force or Shadow Ball. However, Dragapult's SpA is -4, so special moves are weak. Phantom Force is physical though. Dragonite at 42/168 HP. Phantom Force from Dragapult likely KOs. But we need to attack. Ice Spinner is super effective, best option. Extreme Speed doesn't affect Dragapult (Ghost type). Earthquake is neutral. Ice Spinner is the clear choice. Actually, can Dragonite survive? Multiscale is broken since not full HP. Phantom Force would likely KO. But we have no better option - Ice Spinner is our best shot at KOing.