The Dark Servant is an artifact in Hexen. It looks like a small Maulotaur doll. When thrown, it can become a Maulotaur who will fight for the player. The Maulotaur disappears again after a little while. If it lands in a place where there is not enough room for the Maulotaur to spawn, the artifact will simply float there, where it can be picked up again.