It would be cool if there was a mole creature. It would be immune to the wand though probably. My idea is that it digs itself around the terrain. You can't really see its identity until you get too close. It would then jump up out of the ground and try to bite you. I imagine it would be pretty fast in its dig mode. You can avoid it however. You can see where it is since you would see a big bump in the ground move towards you (When it's digging). I think this would be cool since we don't really have an enemy like this. This is just an idea though as always.