Mewtwo-Mega-Y @ Lum Berry  
Ability: Innards Out  
EVs: 252 HP / 252 Spe  
Hasty Nature  
IVs: 0 Atk / 0 Def / 0 SpD  
- Sticky Web  
- Stealth Rock  
- Taunt  
- Spore  

Arceus @ Psychium Z  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Substitute  
- Baton Pass  
- Defog  
- Magic Coat  

Mewtwo-Mega-X @ Focus Sash  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 Spe  
Naive Nature  
- Photon Geyser  
- Sunsteel Strike  
- Light That Burns the Sky  
- Searing Sunraze Smash  

Lunala @ Focus Sash  
Ability: No Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Fissure  
- Sing  
- Moongeist Beam  
- Shell Smash  

Deoxys-Speed @ Choice Scarf  
Ability: No Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
- Trick  
- Sheer Cold  
- Gastro Acid  
- U-turn  

Blissey @ Figy Berry  
Ability: Innards Out  
EVs: 252 HP / 252 SpD / 252 Spe  
Gentle Nature  
IVs: 0 Atk / 0 Def  
- Defog  
- Parting Shot  
- Whirlwind  
- Soft-Boiled