Xerneas @ Fairium Z  
Ability: Fairy Aura  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Geomancy  
- Ingrain  
- Rest  
- Moonblast  

Grimmsnarl @ Light Clay  
Ability: Prankster  
EVs: 248 HP / 152 Def / 108 SpD  
Impish Nature  
IVs: 0 Atk  
- Reflect  
- Light Screen  
- Taunt  
- Thunder Wave  

Salamence-Mega @ Salamencite  
Ability: Intimidate  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Dragon Dance  
- Double-Edge  
- Earthquake  
- Facade  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 248 Atk / 144 SpD / 116 Spe  
Adamant Nature  
- Swords Dance  
- Rock Polish  
- Precipice Blades  
- Stone Edge  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
- Calm Mind  
- Judgment  
- Ice Beam  
- Recover  

Eternatus @ Power Herb  
Ability: Pressure  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Meteor Beam  
- Dynamax Cannon  
- Flamethrower  
- Sludge Bomb