Giratina @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 SpA  
- Core Enforcer  
- Haze  
- Strength Sap  
- Roost  

Shedinja @ Protective Pads  
Ability: Sturdy  
EVs: 1 HP / 252 Atk / 1 Def / 1 SpA / 1 SpD / 1 Spe  
Lonely Nature  
IVs: 0 HP / 0 Def / 0 SpA / 0 SpD / 0 Spe  
- U-turn  
- Pursuit  
- Extreme Speed  
- Endeavor  

Magearna @ Leftovers  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- U-turn  
- Milk Drink  
- Defog  
- Toxic  

Chansey @ Eviolite  
Ability: Imposter  
Happiness: 0  
EVs: 252 HP / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 SpA / 0 Spe  
- Whirlwind  
- Soft-Boiled  
- Topsy-Turvy  
- Metal Burst  

Zygarde-Complete @ Groundium Z  
Ability: Comatose  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Thousand Waves  
- Shore Up  
- Topsy-Turvy  
- Worry Seed  

Mewtwo-Mega-Y @ Life Orb  
Ability: Sheer Force  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Bolt Strike  
- Earth Power  
- Ice Beam  
- Psychic