Board Thread:Warhammer 40k General Discussion/@comment-88.114.255.138-20130111160957/@comment-3258762-20130121093206

I doubt Slaanesh will become like Nurgle and Tzeentch. If anything, he will become the most powerful as he draws power from misery (which there is very much of in 40k) but also from carnal pleasures us humans have a tendancy to partake in.

So, everything Khorne gets empowered by empoweres Slaanesh, as if the blood flows, the misery of the victim, the pain of the victim and the joy of the murderer will then empower Slaanesh, thus giving him three-fold the power of Khorne.