Milotic @ Sitrus Berry  
Ability: Marvel Scale  
EVs: 252 HP / 252 SpA / 4 SpD  
Modest Nature  
IVs: 0 Atk  
- Dragon Pulse  
- Blizzard  
- Recover  
- Hydro Pump  

Gyarados @ Gyaradosite  
Ability: Intimidate  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Waterfall  
- Crunch  
- Ice Fang  
- Stone Edge  

Whiscash  
Ability: Oblivious  
EVs: 248 HP / 252 Atk / 8 SpA  
Brave Nature  
- Earthquake  
- Muddy Water  
- Rain Dance  
- Rock Tomb  

Ludicolo  
Ability: Swift Swim  
EVs: 4 Atk / 252 SpA / 252 Spe  
Mild Nature  
- Fake Out  
- Scald  
- Energy Ball  
- Ice Beam  

Tentacruel  
Ability: Clear Body  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Sludge Wave  
- Brine  
- Rain Dance  
- Dazzling Gleam  

Wailord  
Ability: Water Veil  
EVs: 248 HP / 252 Atk / 8 SpA  
Lonely Nature  
- Water Spout  
- Heavy Slam  
- Earthquake  
- Blizzard