PsySurge (Mesprit) @ Life Orb / Leftovers
Ability: Psychic Surge  
EVs: 4 HP / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Expanding Force  
- Nasty Plot  
- Dazzling Gleam  
- Shadow Ball / Psyshock / Stealth Rock / Knock Off / U-Turn

RegenVest (Mesprit) @ Assault Vest  
Ability: Regenerator  
EVs: 252 HP / 4 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Knock Off  
- Future Sight  
- U-turn  
- Psyshock