Gastly @ Life Orb  
Ability: Levitate  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Sludge Bomb  
- Shadow Ball  
- Thunderbolt / Energy Ball
- Substitute

Gastly @ Choice Scarf  
Ability: Levitate  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Shadow Ball  
- Sludge Bomb  
- Thunderbolt  
- Trick / Energy Ball