So, I had an idea for enabling characters to use hypnosis (of the mundane sort often attempted in our own world). I don't know if something like that exists already, though.

If it doesn't, what would be a good form? A new skill seems rather suboptimal, since it requires a feat to be any good at it (Able Learner, IIRC); however, I'm not too sure what else to do. Perhaps a new base class, but that seems ridiculously excessive.

Whatever form this takes, it's a mind-affecting extraordinary effect, and probably requires a good bit of time.

Fake edit: maybe a subskill of Perform, with special rules for it like Profession: sailor has??