User blog comment:Blueyhale/How do World Eaters get around without psykers?/@comment-26195655-20150507073638

Then there are Gore Mages in the Blood Pact army who are combat psykers, either they read creed of Khorne (like a bible or something) so many times and they found "loopholes" (that's my guess anyway) that they can safely use them without having Khorne's wrath upon them. (Either that or Dan Abnett decided to deviate from Khorne's tenant about psykers and not giving a damn)