Kyurem-Black @ Choice Band  
Ability: Refrigerate  
Happiness: 0  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Extreme Speed  
- Frustration  
- Bolt Beak  
- Close Combat  

Xerneas @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Quiver Dance  
- Moonblast  
- Spikes  
- Volt Switch  

Eternatus @ Black Sludge  
Ability: Magic Bounce  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Venoshock  
- Core Enforcer  
- Court Change  
- Recover  

Chansey (F) @ Shed Shell  
Ability: Imposter  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Calm Nature  
- Court Change  
- Shore Up  
- Metal Burst  
- Baneful Bunker  

Arceus-Fire @ Heavy-Duty Boots  
Ability: Fur Coat  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Will-O-Wisp  
- Spectral Thief  
- Anchor Shot  
- Slack Off  

Gyarados-Mega @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Haze  
- Recover  
- Knock Off  
- Flip Turn