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  
- Taunt  
- Toxic Spikes  
- Moongeist Beam  

Mewtwo-Mega-Y @ Life Orb  
Ability: Protean  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Sunsteel Strike  
- Moongeist Beam  
- Moonblast  
- Shell Smash  

Arceus-Ghost @ Fist Plate  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Judgment  
- Taunt  
- Moongeist Beam  
- Shell Smash  

Mewtwo-Mega-X @ Leppa Berry  
Ability: Honey Gather  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naughty Nature  
- First Impression  
- Photon Geyser  
- Light That Burns the Sky  
- Searing Sunraze Smash  

Yveltal @ Pixie Plate  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
- Photon Geyser  
- Judgment  
- Shell Smash  
- Beat Up  

Houndoom-Mega @ Choice Scarf  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Menacing Moonraze Maelstrom  
- Blue Flare  
- Toxic Spikes  
- Trick