Originally Posted by Fat Efferalgan
What about Soak ?
You could just set up Spikes and/or StealthRocks with any teammate and just bring him in. He has coverage problems with Grass/Ghost not being very efficient STABs. You just change the opponent's type to Water, and rape him with STABbed super-effective HornLeech or PowerWhip. The opponent will have the choice between staying there and dying (or trying to attack without his STAB) or switching and taking damages from Spikes. As Necturna spinblocks as well, he could quickly become very annoying.
Well I'm definitely using this now haha