Mewtwo-Mega-Y @ Choice Scarf  
Ability: Innards Out  
EVs: 252 HP / 252 SpA / 252 Spe  
Hasty Nature  
IVs: 0 Atk / 0 Def / 0 SpD  
- Light That Burns the Sky  
- Menacing Moonraze Maelstrom  
- Stealth Rock  
- Trick  

Houndoom-Mega @ Earth Plate  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
- Shell Smash  
- Photon Geyser  
- Judgment  
- Fleur Cannon  

Kyurem-White @ Focus Sash  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Mild Nature  
- Shell Smash  
- Sunsteel Strike  
- Moongeist Beam  
- Freeze-Dry  

Regigigas @ Iapapa Berry  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Extreme Speed  
- Photon Geyser  
- V-create  

Gengar-Mega @ Focus Sash  
Ability: No Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Zap Cannon  
- Fissure  
- Toxic Spikes  
- Taunt  

Blissey (F) @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Trick  
- Spikes  
- Whirlwind  
- Wish