Clothier Voodoo Doll

The Clothier Voodoo Doll is an Accessory rarely dropped by Angry Bones and Dark Casters in the Dungeon. It is used to summon Skeletron, which can only be done at night. To use it, you must equip the Doll in an accessory slot, and then kill the Clothier using any weapon, at night.

Trivia

 * The Clothier Voodoo Doll may be a reference to the Leather Doll called Wilson that the Clothier tells the player he made because he was lonely (itself a reference to the volleyball named Wilson in the movie Castaway).