Urshifu-Rapid-Strike @ Choice Scarf  
Ability: Unseen Fist  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- U-turn  
- Close Combat  
- Surging Strikes  
- Poison Jab  

Toxapex @ Black Sludge  
Ability: Regenerator  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Poison Jab  
- Knock Off  
- Recover  
- Haze  

Volcanion @ Heavy-Duty Boots  
Ability: Water Absorb  
EVs: 252 HP / 252 SpA / 4 Spe  
Modest Nature  
IVs: 0 Atk  
- Flamethrower  
- Toxic  
- Defog  
- Steam Eruption  

Slowking (F) @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 252 HP / 4 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Teleport  
- Future Sight  
- Ice Beam  
- Slack Off  

Gastrodon-East @ Leftovers  
Ability: Storm Drain  
EVs: 252 HP / 4 Atk / 252 Def  
Relaxed Nature  
- Earthquake  
- Clear Smog  
- Scald  
- Recover  

Cloyster @ Focus Sash  
Ability: Skill Link  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Icicle Spear  
- Ice Shard  
- Rock Blast  
- Shell Smash