Xerneas @ Life Orb  
Ability: Pixilate  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Mild Nature  
- Quiver Dance  
- Boomburst  
- Explosion  
- Blue Flare  

Regigigas @ Leftovers  
Ability: Unaware  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Spectral Thief  
- Slack Off  
- Nuzzle  
- Teleport  

Giratina @ Heavy-Duty Boots  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Calm Nature  
IVs: 0 Atk  
- Parting Shot  
- Destiny Bond  
- Haze  
- Slack Off  

Zamazenta-Crowned @ Assault Vest  
Ability: Regenerator  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Sunsteel Strike  
- Thunderous Kick  
- Glacial Lance  
- U-turn  

Eternatus @ Leftovers  
Ability: Dragon's Maw  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Dragon Energy  
- Anchor Shot  
- Imprison  
- Transform  

Spectrier @ Life Orb  
Ability: Simple  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Nasty Plot  
- Moongeist Beam  
- Secret Sword  
- Ice Beam