Omastar @ Mystic Water  
Ability: Swift Swim  
EVs: 248 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Surf  
- Tail Glow
- Sleep Talk / Substitute
- Thunder / Ice Beam / Spore