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  

Rayquaza-Mega @ Life Orb  
Ability: Mold Breaker  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naive Nature  
- Oblivion Wing  
- Core Enforcer  
- Thousand Arrows  
- Clangorous Soulblaze  

Gyarados-Mega @ Leftovers  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Baton Pass  
- Shell Smash  
- Substitute  
- Power Trip  

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 / 252 Spe  
Impish Nature  
- Stealth Rock  
- 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  
- Parting Shot  
- Aromatherapy  
- Defog  
- Recover