Groudon @ Red Orb  
Ability: Electric Surge  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- V-create  
- Precipice Blades  
- Morning Sun  
- Stealth Rock  

Mewtwo-Mega-Y @ Life Orb  
Ability: Sheer Force  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Psychic  
- Earth Power  
- Ice Beam  
- Bolt Strike  

Mewtwo-Mega-X @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Jolly Nature  
- Photon Geyser  
- Close Combat  
- Knock Off  
- U-turn  

Giratina @ Icium Z  
Ability: Prankster  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Shore Up  
- Destiny Bond  
- Haze  
- Spectral Thief  

Chansey @ Eviolite  
Ability: Fur Coat  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Heal Order  
- Metal Burst  
- U-turn  
- Topsy-Turvy  

Registeel @ Rocky Helmet  
Ability: Mummy  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Anchor Shot  
- Recover  
- Defog  
- Toxic Thread