Deoxys-Speed @ Light Clay  
Ability: Snow Warning  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Spore  
- Aurora Veil  
- Stealth Rock  
- U-turn  

Mewtwo-Mega-X @ Sitrus Berry  
Ability: Unburden  
EVs: 252 HP / 252 Atk / 84 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Belly Drum  
- Mach Punch  
- Spectral Thief  
- Sunsteel Strike  

Mewtwo-Mega-Y @ Pixie Plate  
Ability: Contrary  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psycho Boost  
- Overheat  
- Moongeist Beam  
- Judgment  

Regigigas @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Shift Gear  
- Lovely Kiss  
- Facade  
- Spectral Thief  

Tyranitar-Mega @ Safety Goggles  
Ability: Sand Stream  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Spore  
- Diamond Storm  
- Pursuit  
- Shore Up  

Registeel @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Haze  
- Destiny Bond  
- Shore Up  
- U-turn