Vileplume @ Black Sludge  
Ability: Effect Spore  
EVs: 252 HP / 252 Def / 4 Spe  
Bold Nature  
IVs: 0 Atk  
- Giga Drain  
- Sludge Bomb  
- Sleep Powder  / Moonblast
- Strength Sap / Moonlight / Synthesis

Vileplume @ Black Sludge  
Ability: Effect Spore  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature    
IVs: 0 Atk  
- Giga Drain  
- Sludge Bomb  
- Sleep Powder  / Moonblast
- Moonlight / Synthesis