Rayquaza @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Brave Bird  
- Thousand Arrows  
- Stealth Rock  
- Mirror Coat  

Chansey (F) @ Shed Shell  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Whirlwind  
- Final Gambit  
- Roost  
- Dragon Tail  

Zacian @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Spirit Break  
- Taunt  
- Knock Off  
- Sacred Fire  

Dialga @ Heavy-Duty Boots  
Ability: Fur Coat  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Sassy Nature  
- Core Enforcer  
- Roost  
- Anchor Shot  
- Defog  

Groudon @ Assault Vest  
Ability: Regenerator  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- U-turn  
- Precipice Blades  
- Spectral Thief  
- Shadow Sneak  

TOWER OF POWER (Regigigas) @ Light Clay  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Calm Nature  
IVs: 0 Atk  
- Haze  
- Reflect  
- Light Screen  
- Recover