Mewtwo-Mega-X @ Choice Band  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Jolly Nature  
IVs: 30 HP  
- Drain Punch  
- Photon Geyser  
- Knock Off  
- Sacred Fire  

Muk-Alola @ Air Balloon  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
IVs: 30 HP  
- Parting Shot  
- Knock Off  
- Defog  
- Recover  

Xerneas @ Iron Plate  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 30 HP / 0 Atk  
- Shell Smash  
- Judgment  
- Moonblast  
- Lava Plume  

Mewtwo-Mega-X @ Shed Shell  
Ability: Pure Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
IVs: 30 HP  
- Thousand Arrows  
- Leaf Blade  
- Drain Punch  
- Play Rough  

Scizor-Mega @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Bold Nature  
IVs: 30 HP  
- Stealth Rock  
- Roost  
- U-turn  
- Powder  

Mewtwo-Mega-Y @ Earth Plate  
Ability: Protean  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Quiver Dance  
- Photon Geyser  
- King's Shield  
- Judgment