Originally Posted by
Erik Vale
Yea, it's at that point Khorne contacts you about becomeing a demon because you kicked ones ass (He's all about honour and combat, not just blood). Also, that one gets destroyed/tortured.
If you do it again a couple of times, he makes you a greater demon/demon prince instead. (In the fluff there was a noblewomen who just ate (Ok, asked them to posses her and then beat them with her own will) greater slannesh demons until Slanesh stopped her and mage her a demon prince to avoid it happening again, all in the search for eternal youth).