Board Thread:Warhammer 40k General Discussion/@comment-6078851-20130130174042/@comment-101.113.186.93-20130211071935

The emporer imbued them all with the immaterium whilst bio-engineering them - they are all part born of the warp.

To add to the list above:

Konrad Kurze - Would have visions at random but the predominant ability is to cause fear in anyone and anything. This is what prevented Corax killing Lorgar and why the only thing Rogal Dorn was/is Konrad Curze which he admitted to Malcodor the Sigillete during the Horus Heresy.

Khan - I believe he had the ability to cause lighting/thunder to strike his foes (creates a cloud storm overhead to do so)