Ethan Rayne had this statue hidden at the back of Ethan's Costume Shop. He used it to enchant its costumes in the evening of Halloween, cursing whoever wears them with the Ritual of Janus to become the attributes represented by the costumes. Notably, Buffy Summers became a 18th century noblewoman, Alexander Harris a soldier, and Willow Rosenberg a ghost.
Rupert Giles discovered Ethan was behind the plot, and sought his former friend at the shop. Under torture, Ethan explained it was necessary to break the statue to interrupt the spell. So Giles threw it on the floor, destroying it just in time to prevent Spike from killing the Slayer.