Mewtwo-Mega-Y @ Life Orb  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- High Jump Kick  
- Mind Blown  
- Volt Tackle  
- Light of Ruin  

Shedinja @ Protective Pads  
Ability: Sturdy  
EVs: 97 HP / 252 Atk  
Brave Nature  
IVs: 0 HP / 0 Def / 0 SpA / 0 SpD / 0 Spe  
- Endeavor  
- Extreme Speed  
- Stealth Rock  
- U-turn  

Slowbro-Mega @ Rocky Helmet  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Entrainment  
- Defog  
- Slack Off  
- U-turn  

Arceus-Fairy @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Facade  
- Spectral Thief  
- Spiky Shield  
- Spikes  

Ho-Oh @ Iapapa Berry  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Fire Lash  
- Haze  
- Encore  
- Heal Order  

Chansey (F) @ Eviolite  
Ability: Imposter  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Calm Nature  
IVs: 0 Atk  
- Whirlwind  
- Defog  
- Shore Up  
- Parting Shot