Phantasmal Emperor (Giratina) @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Strength Sap  
- Core Enforcer  
- Milk Drink  
- Haze  

Apollo 13 (Mewtwo-Mega-Y) @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psystrike  
- Moonblast  
- Earth Power  
- Taunt  

Stardust Reverie (Xerneas) @ Pixie Plate  
Ability: Pixilate  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Boomburst  
- Rapid Spin  
- Spikes  
- Strength Sap  

Life Game (Blissey) (F) @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Whirlwind  
- Final Gambit  
- Trick  
- Heal Order  

Mind Shaker (Ho-Oh) @ Rocky Helmet  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Anchor Shot  
- Knock Off  
- Shore Up  
- Coil  

Omoikane's Device (Shedinja) @ Protective Pads  
Ability: Sturdy  
EVs: 252 HP / 252 Atk  
Brave Nature  
IVs: 0 Def / 0 SpD / 0 Spe  
- U-turn  
- Endeavor  
- Stealth Rock  
- Extreme Speed