Ho-Oh @ Life Orb  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Brave Bird  
- Defog  
- Fire Lash  
- Shore Up  

Yveltal @ Sharp Beak  
Ability: Triage  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Nasty Plot  
- Magma Storm  
- Oblivion Wing  
- Imprison  

Regigigas @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Knock Off  
- Facade  
- Precipice Blades  
- Dragon Dance  

Giratina @ Leftovers  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Haze  
- Core Enforcer  
- Spectral Thief  
- Slack Off  

Zamazenta-Crowned @ Leftovers  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Spikes  
- Thunderous Kick  
- Anchor Shot  
- Soft-Boiled  

Kyogre @ Assault Vest  
Ability: Regenerator  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Calm Nature  
- Nuzzle  
- Spectral Thief  
- Origin Pulse  
- U-turn