Swampert-Mega @ Swampertite  
Ability: Swift Swim  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Waterfall  
- Earthquake  
- Ice Punch  
- Rain Dance  

Pelipper @ Damp Rock  
Ability: Drizzle  
EVs: 248 HP / 32 Def / 228 SpD  
Bold Nature  
- Scald  
- Roost  
- U-turn  
- Defog  

Tornadus-Therian @ Assault Vest  
Ability: Regenerator  
EVs: 248 HP / 8 Atk / 252 Spe  
Adamant Nature  
- Hurricane  
- Superpower  
- U-turn  
- Knock Off