DREAMCAST CASINO (Mewtwo-Mega-X) @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Low Kick  
- Sunsteel Strike  
- Blizzard  
- Steam Eruption