I am (re)developing a rather sneaky prestige class for use in a friend's game. One of the prerequisites will be the Darkstalker feat from Lords of Madness. I'm trying to come up with a class ability that will expand on that feat. I'd say outright immunity to blindsight, et al, is a little extreme. Although a penalty on the detection roll is a reasonable solution, i was wanting something a little more interesting.
Any ideas?
