Toxicroak @ Life Orb
Ability: Dry Skin  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Nasty Plot  
- Sludge Wave  
- Focus Blast  
- Dark Pulse / Vacuum Wave

Toxicroak @ Life Orb
Ability: Dry Skin  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Swords Dance  
- Gunk Shot  
- Drain Punch  
- Sucker Punch / Ice Punch

Note: Black Sludge is also a good option on either set. Blunder Policy is gimmicky for NP but pretty great when it works!!