Kyogre-Primal @ Blue Orb  
Ability: Primordial Sea  
EVs: 248 HP / 252 SpA / 8 Spe  
Modest Nature  
IVs: 0 Atk  
- Water Spout  
- Ice Beam  
- Thunder  
- Protect  

Magearna @ Air Balloon  
Ability: Soul-Heart  
EVs: 244 HP / 4 Def / 252 SpA / 4 SpD  
Quiet Nature  
IVs: 0 Atk / 0 Spe  
- Dazzling Gleam  
- Trick Room  
- Protect  
- Grass Knot  

Tapu Lele @ Eject Button  
Ability: Psychic Surge  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Nature's Madness  
- Nature Power  
- Moonblast  
- Taunt  

Banette-Mega @ Banettite  
Ability: Insomnia  
EVs: 248 HP / 252 Atk / 8 Def  
Brave Nature  
IVs: 0 Spe  
- Destiny Bond  
- Trick Room  
- Gunk Shot  
- Skill Swap  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 252 Atk / 4 Def  
Brave Nature  
IVs: 0 Spe  
- Precipice Blades  
- Fire Punch  
- Rock Slide  
- Hone Claws  

Arceus @ Normalium Z  
Ability: Multitype  
EVs: 248 HP / 252 Atk / 8 Def  
Brave Nature  
IVs: 0 Spe  
- Extreme Speed  
- Swords Dance  
- Shadow Claw  
- Trick Room