Mewtwo-Mega-X @ Fairy Memory  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Jolly Nature  
- Photon Geyser  
- Multi-Attack  
- Bonemerang  
- Light That Burns the Sky  

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

Gyarados-Mega @ Leftovers  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Baton Pass  
- Shell Smash  
- Strength Sap  
- Spectral Thief  

Blissey (F) @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Jolly Nature  
IVs: 0 Atk  
- Lunar Dance  
- Final Gambit  
- Parting Shot  
- Trick  

Zygarde-Complete @ Leftovers  
Ability: Fur Coat  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Destiny Bond  
- Shore Up  
- Haze  
- U-turn  

Audino-Mega @ Safety Goggles  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Stealth Rock  
- Aromatherapy  
- Defog  
- Recover