Disco Steve's Curse of Groove

You lock eyes with an enemy. A spotlight appears above you, and the room around you dims. You begin to slowly moonwalk a few feet backwards, and then strike a dance pose! All creatures within 100 ft. that can see you must succeed on a Charisma saving throw or start uncontrollably dancing for 1 minute! Creatures that are uncontrollable dancing have their movement speed halved and have disadvantage on attack rolls. On a dancing creatures turn, it can repeat the saving throw to attempt to snap out of it. If they fail, however, the duration of the dancing extends an extra round.