Ah... thanks! I haven't played that character yet. I guess the collar will just be some gold then, as my current characters probably won't take that skill.
Thanks for the quick answer!
I thought this was not a skill anyone else was allowed to take, is there another qualified character in the freaks and psychos expansion?
As for the collar... I think it's applicable to weapons that hurt the whole room, like that one that does 1 damage to the whole room for two rounds.