Gengar @ Lum Berry  
Ability: Levitate  
EVs: 252 SpA / 28 SpD / 228 Spe  
Modest Nature  
IVs: 0 Atk  
- Ice Punch  
- Thunderbolt  
- Substitute  
- Destiny Bond  

Slaking @ Choice Band  
Ability: Truant  
EVs: 252 Atk / 60 SpD / 196 Spe  
Jolly Nature  
- Earthquake  
- Double-Edge  
- Hyper Beam  
- Shadow Ball  

Heracross @ Leftovers  
Ability: Swarm  
EVs: 240 HP / 40 Atk / 132 SpD / 96 Spe  
Careful Nature  
- Bulk Up  
- Earthquake  
- Hidden Power [Bug]  
- Substitute