Blood Clan Khazra (Bestiary)

Though I have searched eveyr corner of the Great Library of Caldeum, I can find no references to the true fate of the Blood Clan khazra. Some crumbling papers hint that they made a pact to serve the mythical Lesser Evils, but surely such a thing cannot be considered proper scholarship... can it?
Abd al-Hazir
Category:Diablo III
Category:Books