I thought of something, but I'm not sure if this could work out or not...
Toxicroak w/ Dry Skin
Relaxed. 252 HP, 252 DEF, 4 ATK
Item: Sitrus Berry
Toxic
Protect
Belch
Drain Punch
Works best in rain stall teams, and can serve as a decent physical wall, as Toxicroak has decent defensive typing...