Gengar-Mega @ Focus Sash  
Ability: Mold Breaker  
EVs: 252 HP / 252 Spe  
Hasty Nature  
IVs: 0 Atk / 0 Def / 0 SpD  
- Stealth Rock  
- Spikes  
- Taunt  
- Curse  

Necrozma-Dawn-Wings @ Lunalium Z  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Shell Smash  
- Moongeist Beam  
- Destiny Bond  
- Taunt  

Gengar-Mega @ Spooky Plate  
Ability: Dazzling  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Shell Smash  
- Judgment  
- Secret Sword  
- Taunt  

Charizard-Mega-Y @ Life Orb  
Ability: Triage  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Tail Glow  
- Oblivion Wing  
- Secret Sword  
- Giga Drain  

Mewtwo-Mega-X @ Focus Sash  
Ability: Dazzling  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Lonely Nature  
- Shell Smash  
- Close Combat  
- Photon Geyser  
- Ice Beam  

Diancie-Mega @ Focus Sash  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Head Smash  
- Light of Ruin  
- Rapid Spin  
- Mind Blown