New #ttrpg idea. Lycanthrope curse. A member of the party (more than one? ALL of them?) has become cursed to be an unreasoning, feral werebeast of some type. Is this cool? Not exactly. They have it under control and are their old normal selves, at all times, with one exception: when the player who controls them is gone. Every time the player of Ralph (or whomever) misses a session, everyone else starts playing again, but Ralph the PC becomes a ravening let's say werewolf controlled by the GM.