Slaking @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 248 Atk / 12 Spe  
Jolly Nature  
- Substitute  
- Baton Pass  
- Extreme Speed  
- Shell Smash  

Giratina @ Safety Goggles  
Ability: Prankster  
EVs: 248 HP / 252 Def / 8 SpD  
Impish Nature  
IVs: 0 Atk  
- Encore  
- Curse  
- Recover  
- Destiny Bond  

Groudon-Primal @ Choice Band  
Ability: Mold Breaker  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Trick  
- U-turn  
- Thousand Arrows  
- V-create  

Rayquaza-Mega @ Life Orb  
Ability: Turboblaze  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Substitute  
- Dark Void  
- Shell Smash  
- Oblivion Wing  

Xerneas @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 8 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Stealth Rock  
- Defog  
- Moonblast  
- Baton Pass  

Gyarados-Mega @ Dread Plate  
Ability: Pure Power  
EVs: 252 Atk / 252 Def / 4 Spe  
Adamant Nature  
- Water Shuriken  
- Pursuit  
- Sucker Punch  
- Low Kick