Most of the intelligent races in the Warhammer 40,000 universe employ psykers on the battlefield; some of these psykers are inevitably more potent than others. There are three exceptions to this: the Tau, the Dark Eldar and the Necrons. The Tau have yet to develop any psykers among their race because they have only recently evolved to fully sentient status. The Dark Eldar, though as possessed of inherent psychic ability as their Craftworld counterparts, fear that the use of psychic powers only further hastens the loss of their souls to Slaanesh. The Necrons no longer possess souls since they transferred their consciousnesses into their necrodermis bodies and became creatures wholly of the physical universe like their C'tan masters; as a result they no longer generate any presence within th