The empyrically attuned minds of Primaris Psykers are steeled against the manifold dangers risked by unsanctioned wielders of the warp's power. These battle-trained psykers support the Astra Militarum's soldiers with eerie prognostication, wards against enemy witchcraft, and tempests of their own psychic might. Though rarely trusted by their peers, few generals would go to battle without a psyker's aid.