The Curse of Lycanthropy

A system for handling player characters afflicted by lycanthropy that feels more like a curse, and less like a free bonus. A cursed player will have to stave off becoming a monster if they want to use their newfound power. If they use it too much, they'll slowly take on the worst traits of their animal form, and to rid themself of the curse, they'll need magic during the full moon, or to eat deadly wolfsbane before it's too late.