Mewtwo-Mega-Y @ Terrain Extender  
Ability: Psychic Surge  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Magic Coat  
- Light That Burns the Sky  
- Glare  
- Stealth Rock  

Aegislash-Blade @ Focus Sash  
Ability: Simple  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Mild Nature  
- Shell Smash  
- Moongeist Beam  
- Sunsteel Strike  
- Close Combat  

Deoxys-Speed @ Focus Sash  
Ability: No Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
IVs: 0 Atk  
- Fissure  
- Inferno  
- Spikes  
- Parting Shot  

Ho-Oh @ Focus Sash  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Spectral Thief  
- Recover  
- Defog  
- U-turn  

Blissey (F) @ Lum Berry  
Ability: Innards Out  
EVs: 252 HP / 252 Atk / 252 SpD  
Gentle Nature  
IVs: 0 Def / 0 Spe  
- Magic Coat  
- U-turn  
- Stealth Rock  
- Beak Blast  

Mewtwo-Mega-X @ Choice Band  
Ability: Shadow Tag  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Adamant Nature  
- Light That Burns the Sky  
- Pursuit  
- V-create  
- Ice Hammer