Regigigas @ Toxic Orb  
Ability: Poison Heal  
Shiny: Yes  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Substitute  
- Coil  
- Facade  
- Spectral Thief  

Diancie-Mega @ Choice Specs  
Ability: Pixilate  
Shiny: Yes  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naive Nature  
- Boomburst  
- Extreme Speed  
- Volt Switch  
- Earth Power  

Arceus-Water @ Earth Plate  
Ability: Fur Coat  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Judgment  
- Scald  
- Topsy-Turvy  
- Shore Up  

Mewtwo-Mega-X @ Life Orb  
Ability: Magic Guard  
Shiny: Yes  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naive Nature  
- High Jump Kick  
- Light of Ruin  
- Precipice Blades  
- U-turn  

Groudon @ Red Orb  
Ability: Dauntless Shield  
Shiny: Yes  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- V-create  
- Shore Up  
- Anchor Shot  
- Stealth Rock  

Chansey @ Eviolite  
Ability: Imposter  
Shiny: Yes  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD  
Relaxed Nature  
- Teleport  
- Shore Up  
- Anchor Shot  
- Whirlwind