Well, it's supposed to be affected by Toxic and Flame Orb...But if you guys find that too OP, then, let that out. But, of course, that'd add a bit of stall/setting up to the game, which is always a bit fun

Of course, I forgot to say. Mold Breaker negates these effects. (To keep it from being broken.)
You guys can pick the Pokemon that gets this ability, I'm not really sure myself.