Kyogre @ Damp Rock  
Ability: Drizzle  
Tera Type: Poison  
EVs: 252 HP / 252 SpA / 4 SpD  
Quiet Nature  
IVs: 0 Atk / 1 Spe  
- Water Spout  
- Origin Pulse  
- Ice Beam  
- Thunder  

Arceus-Water @ Splash Plate  
Ability: Multitype  
Tera Type: Fairy  
EVs: 240 HP / 252 Def / 16 SpA  
Bold Nature  
IVs: 0 Atk  
- Ice Beam  
- Trick Room  
- Healing Wish  
- Recover  

Palafin @ Choice Band  
Ability: Zero to Hero  
Tera Type: Water  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Jet Punch  
- Flip Turn  
- Wave Crash  
- Close Combat  

Palkia @ Eject Pack  
Ability: Pressure  
Tera Type: Water  
EVs: 248 HP / 252 SpA / 8 SpD  
Quiet Nature  
IVs: 0 Atk / 0 Spe  
- Trick Room  
- Draco Meteor  
- Spacial Rend  
- Hydro Pump  

Samurott-Hisui @ Focus Sash  
Ability: Sharpness  
Tera Type: Water  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Taunt  
- Ceaseless Edge  
- Sucker Punch  
- Sacred Sword  

Iron Bundle @ Booster Energy  
Ability: Quark Drive  
Tera Type: Ice  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Encore  
- Hydro Pump  
- Ice Beam  
- Freeze-Dry