Xerneas @ Fairium Z  
Ability: Speed Boost  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Tail Glow  
- Moonblast  
- Power Gem  
- Earth Power  

Chansey (F) @ Eviolite  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Topsy-Turvy  
- Shore Up  
- U-turn  
- Whirlwind  

Mewtwo-Mega-Y @ Life Orb  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Knock Off  
- Precipice Blades  
- Light of Ruin  
- Volt Tackle  

Arceus @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- King's Shield  
- Facade  
- Spectral Thief  
- Defog  

Zygarde-Complete @ Groundium Z  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Thousand Waves  
- Stealth Rock  
- Shore Up  
- Haze  

Gengar-Mega @ Spooky Plate  
Ability: Adaptability  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Shell Smash  
- Judgment  
- Sludge Bomb  
- Spikes