Mewtwo-Mega-X @ Shed Shell  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Photon Geyser  
- Play Rough  
- Thousand Arrows  
- Sacred Fire  

Scizor-Mega @ Buginium Z  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Stealth Rock  
- U-turn  
- Roost  
- Defog  

Gengar-Mega @ Focus Sash  
Ability: Magic Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Shell Smash  
- Moongeist Beam  
- Secret Sword  
- Taunt  

Gengar-Mega @ Choice Scarf  
Ability: Shadow Tag  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Moongeist Beam  
- Searing Shot  
- Shell Smash  
- Trick  

Meloetta @ Safety Goggles  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Wish  
- Spiky Shield  
- Magic Coat  
- Baton Pass  

Deoxys-Speed @ Focus Sash  
Ability: No Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
IVs: 0 Atk  
- Fissure  
- Sing  
- Gastro Acid  
- Sticky Web