Chansey (F) @ Shed Shell  
Ability: Innards Out  
EVs: 252 HP / 252 SpD / 252 Spe  
Gentle Nature  
IVs: 0 Atk / 0 Def  
- Roar  
- Magic Coat  
- Baton Pass  
- Wish  

Kartana @ Focus Sash  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 Spe  
Naughty Nature  
IVs: 0 SpD  
- Shell Smash  
- Sunsteel Strike  
- Searing Sunraze Smash  
- Ice Shard  

Yveltal @ Focus Sash  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Relaxed Nature  
- Spectral Thief  
- Pursuit  
- Mind Blown  
- Defog  

Mewtwo-Mega-X @ Focus Sash  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naughty Nature  
- Photon Geyser  
- Sunsteel Strike  
- Moongeist Beam  
- Close Combat  

Gengar-Mega @ Choice Scarf  
Ability: Parental Bond  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Moongeist Beam  
- Sludge Bomb  
- Bug Buzz  
- Baton Pass  

Kyogre-Primal @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Core Enforcer  
- Aromatherapy  
- Shore Up  
- Baton Pass