Gloom Prism

A Gloom Prism is a form of Necron artefact can be carried by Canoptek Spyders. A Gloom Prism is a green crystal laced with arcane circuitry, and can generate an anti-psychic null field; which in turn generates a zone, in the vicinity of roughly fifty metres, that is shrouded from Warp spawned powers, by severing the connections that Daemons and Psykers have to the Immaterium.