Groudon-Primal @ Safety Goggles  
Ability: Mold Breaker  
EVs: 200 HP / 252 Atk / 56 Spe  
Adamant Nature  
- Dark Void  
- Thousand Arrows  
- Shell Smash  
- King's Shield  

Xerneas @ Pixie Plate  
Ability: Mold Breaker  
EVs: 72 Def / 252 SpA / 184 Spe  
Modest Nature  
IVs: 0 Atk  
- Shell Smash  
- Judgment  
- Steam Eruption  
- King's Shield  

Xerneas @ Iron Plate  
Ability: Wonder Guard  
EVs: 180 HP / 252 SpA / 76 Spe  
Modest Nature  
IVs: 0 Atk  
- Shell Smash  
- Freeze-Dry  
- Judgment  
- Lava Plume  

Slaking @ Silk Scarf  
Ability: Shadow Tag  
EVs: 248 HP / 252 Atk / 8 Spe  
Adamant Nature  
- Fake Out  
- Extreme Speed  
- Low Kick  
- Spikes  

Gyarados-Mega @ Lum Berry  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 8 Spe  
Adamant Nature  
- Water Shuriken  
- Knock Off  
- Pursuit  
- Sucker Punch  

Mewtwo-Mega-X @ Choice Scarf  
Ability: No Guard  
EVs: 248 HP / 8 Def / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Sheer Cold  
- Sing  
- Gastro Acid  
- Trick