Politoed @ Eject Button  
Ability: Drizzle  
EVs: 240 HP / 208 Def / 60 SpA  
Modest Nature  
IVs: 0 Atk  
- Scald  
- Ice Beam  
- Helping Hand  
- Protect  

Swampert-Mega @ Swampertite  
Ability: Swift Swim  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Waterfall  
- Earthquake  
- Ice Punch  
- Stealth Rock  

Genesect @ Assault Vest  
Ability: Download  
EVs: 252 HP / 56 SpA / 200 SpD  
Quiet Nature  
- Thunder  
- Ice Beam  
- Iron Head  
- U-turn  

Thundurus (M) @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 80 Def / 164 SpA / 12 Spe  
Modest Nature  
IVs: 30 HP / 0 Atk / 30 Def / 30 SpA / 30 SpD  
- Thunder  
- Hidden Power [Flying]  
- Thunder Wave  
- Rain Dance  

Amoonguss @ Rocky Helmet  
Ability: Regenerator  
EVs: 252 HP / 136 Def / 120 SpD  
Bold Nature  
IVs: 0 Atk / 28 Spe  
- Energy Ball  
- Foul Play  
- Spore  
- Rage Powder  

Kingdra @ Life Orb  
Ability: Swift Swim  
EVs: 32 HP / 36 Def / 252 SpA / 188 Spe  
Modest Nature  
IVs: 0 Atk  
- Muddy Water  
- Ice Beam  
- Draco Meteor  
- Protect