This papercraft is the Vault Of Mystery, created by ravensblight. This method of spirit communication is based upon a very old ritual known as 'rolling the bones'. Just toss the three Answer Cubes into the Vault of Mystery, shake well, concentrate on the question you want answered, and pour the cubes out onto any flat level surface.
The cube that lands closest to you will reveal the answer to any question you might ask. The vault and cubes are quick and easy to build, so make a set before sundown and let the communications begin! [via ravensblight]