Xerneas @ Metronome  
Ability: Pixilate  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
- Boomburst  
- Rapid Spin  
- Spikes  
- Strength Sap  

Ho-Oh @ Heavy-Duty Boots  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Anchor Shot  
- Spectral Thief  
- Recover  
- Entrainment  

Blissey (F) @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Whirlwind  
- Final Gambit  
- Soft-Boiled  
- Trick  

Giratina @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Haze  
- Recover  
- Core Enforcer  
- Strength Sap  

Eternatus @ Life Orb  
Ability: Magic Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Sludge Bomb  
- Mind Blown  
- Core Enforcer  
- Taunt  

Regigigas @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Facade  
- Dragon Dance  
- Stealth Rock  
- Nuzzle