Odessa recognizes these as ancient devices, created on a planet she cannot recall, to control psykers. The box can be both simple or ornate, and is placed over the head of the psyker, restricting both their vision & hearing. Runes inscribed within & without restrict the psyker from effectively using their unholy gifts. In addition, the Witch Cage has dozens of rings & spikes so that the psyker is easy to control by slapping the cage or pulling on ropes looped through rings.