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As the millenia pass, the magnificance of the Eldar Empire gives way to corruption, indolence, and spiritual decay as many give in to hedonistic desires.[7] Pleasure cults sprang up over the Eldar lands, and the pantheon of Eldar Gods gradually abandoned in favor of personal deification through insane excess – the Aeldar would not become gods, however.[7]

In these new cults, dedicated to the different aspects of arcane knowledge and sensual excesses, people became more and more corrupt, delving into vicious practices, verging on sadism. Sadistic killers prowled the streets in search of victims, attempting to find new ways to satisfy their needs. It became harder and harder to satisfy their decadent desires, so these acts became more violent. Soon the streets were running with blood and the bestial roar of the crowds could be heard throughout the Eldar empire. Law and order broke down and some Eldar left their worlds as refugees, seeking a more peaceful existence.[1]

The gestalt psychic outpouring from the Aeldari descent into perverted madness nurtured a new deity in the warp[7] and as a direct result of their foul depravity, a new Chaos God was spawned: Slaanesh, formed mainly by the Eldar's lusts and desires. For years before, the Eldar race had been plagued with the images of the sleeping entity. The Eldar slew each other and feasted on the corpses of their fellow kin, while the worlds around them burned. As Slaanesh was born, there was not a single Eldar who did not feel the pain. With a psionic cry, Slaanesh assaulted the universe and the spirits of the Eldar were drawn from their bodies and sucked into the warp. No other creature of the Warp had such a violent birth as Slaanesh, or was as powerful or monstrous. [3b]