Chansey @ Eviolite  
Ability: Natural Cure  
EVs: 4 HP / 252 Def / 252 SpD  
Bold Nature  
IVs: 0 Atk  
- Heal Bell  
- Confide  
- Toxic  
- Soft-Boiled  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 200 Def / 60 SpD  
Impish Nature  
- Defog  
- Toxic  
- Whirlwind  
- Sacred Fire  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 252 HP / 252 Def  
Bold Nature  
- Judgment  
- Ice Beam  
- Recover  
- Stone Edge / Perish Song if you hate baton pass  

Kyogre @ Choice Scarf  
Ability: Drizzle  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Ice Beam  
- Thunder  
- Origin Pulse  
- Water Spout  

Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 248 HP / 8 Atk / 252 Def  
Impish Nature  
IVs: 30 Atk  
- Transform  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Stealth Rock  
- Stone Edge  
- Rest  
- Precipice Blades