Slaking @ Choice Band  
Ability: Truant  
EVs: 4 HP / 252 Atk / 252 Spe  
Adamant Nature  
- Return  
- Earthquake  
- Shadow Ball  
- Hyper Beam  

Gengar @ Lum Berry  
Ability: Levitate  
EVs: 80 HP / 252 SpA / 176 Spe  
Modest Nature  
- Thunderbolt  
- Psychic  
- Ice Punch  
- Perish Song  

Blissey @ Leftovers  
Ability: Natural Cure  
EVs: 152 HP / 252 Def / 100 SpD / 4 Spe  
Bold Nature  
- Seismic Toss  
- Toxic  
- Aromatherapy  
- Soft-Boiled