A spirit planchette is typically found in a wooden case along with a thin wooden board printed with numerous letters and numbers. Nonmagical versions of these divination tools can be purchased in curiosity shops ; while these items can be used as alternative components for augury spells, only magical spirit planchettes allow users to communicate with the other side. Three types of spirit planchettes exist—brass, cold iron, and silver. Each in turn allows an increasingly potent form of divination effect to be utilized. A spirit planchette requires a board to move upon, but this “board” can be made up of letters scribed upon any smooth surface—it need not be a prepared board for a spirit planchette to work.
To use a spirit planchette, you must rest your fingers lightly upon the planchette’s surface and then concentrate on the planchette (as if maintaining a spell with a duration of concentration) for 2d6 rounds while the planchette attunes itself to the ambient spirits of the area. After this time, the planchette begins to slowly slide in random patterns across the board—at this point, questions may be asked of the spirits by any of the individuals involved in the séance. The consequences of each question asked of the spirits depends upon what type of planchette is used for the divination.