Mewtwo-Mega-Y @ Terrain Extender  
Ability: Psychic Surge  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
- Spore  
- 10,000,000 Volt Thunderbolt  
- Photon Geyser  
- Light That Burns the Sky  

Mewtwo-Mega-X @ Leppa Berry  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Light That Burns the Sky  
- Photon Geyser  
- Sunsteel Strike  
- Searing Sunraze Smash  

Pheromosa @ Focus Sash  
Ability: No Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Sheer Cold  
- Gastro Acid  
- Pin Missile  
- Sing  

Kartana @ Focus Sash  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Searing Sunraze Smash  
- Sunsteel Strike  
- Bullet Seed  
- Shell Smash  

Kartana @ Fire Memory  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Sunsteel Strike  
- Multi-Attack  
- Shell Smash  
- Spore  

Blissey (F) @ Safety Goggles  
Ability: Innards Out  
EVs: 252 HP / 252 SpD  
Gentle Nature  
IVs: 0 Atk / 0 Def / 0 SpA / 0 Spe  
- Baton Pass  
- Stealth Rock  
- Shore Up  
- Whirlwind