A creature made by sorceries and a seed item belonging to the person whose physical form it assumes, being designed to imitate them. It requires a year of House Time to grow from Nothing. It can grow mentally conducive mold on people and can only be destroyed if its seed item is plunged into Nothing. The mold originates from the planet called Avraxyn; its mutant form, present in Spirit-Eaters, is transmitted by skin-to-skin contact between and only between the Spirit-Eater and natural beings, wherein after it communicates knowledge of its model to the former. A Spirit-Eater's true form varies and can only be seen through a veil of raindrops on a sunny day. At all other times, it resembles its model. Its technical name is 'Cocigrue'.