Rayquaza @ Life Orb  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Impish Nature  
- Dragon Ascent  
- Core Enforcer  
- Defog  
- Recover  

Groudon @ Red Orb  
Ability: Electric Surge  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- V-create  
- Will-O-Wisp  
- Stealth Rock  
- Strength Sap  

Suicune @ Rocky Helmet  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Anchor Shot  
- Spectral Thief  
- Entrainment  
- Shore Up  

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

Chansey (F) @ Eviolite  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Whirlwind  
- Spectral Thief  
- Recover  
- Will-O-Wisp  

Lopunny-Mega @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Haze  
- Knock Off  
- Defog  
- Close Combat