Regigigas @ Lum Berry  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 8 SpD  
Adamant Nature  
- Gastro Acid  
- Extreme Speed  
- Icicle Spear  
- Pursuit  

Arceus @ Fist Plate  
Ability: Wonder Guard  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Shell Smash  
- Judgment  
- Taunt  
- Ice Beam  

Gengar-Mega @ Black Sludge  
Ability: Wonder Guard  
EVs: 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Substitute  
- Baton Pass  
- Taunt  
- Shadow Ball  

Kyogre-Primal @ Mail  
Ability: Wonder Guard  
EVs: 248 HP / 252 Def / 8 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Defog  
- Parting Shot  
- Scald  
- Roost  

Groudon-Primal @ Choice Scarf  
Ability: Shadow Tag  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Thousand Arrows  
- V-create  
- Toxic Spikes  
- Trick  

Gengar-Mega @ Spooky Plate  
Ability: Teravolt  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Tail Glow  
- Judgment  
- Secret Sword  
- Sludge Wave