When the Horadrim were tasked to capture the Prime Evils and imprison them in the three original soulstones, Zoltun Kulle was charged with bearing the artifacts. The search was long and arduous, but eventually, all three of the Primes were imprisoned. Kulle, however, was left a broken man, and the Horadrim did not hear of him until reports reached them that he had built an archive below the sands of Kehjistan. Jered Cain believed that Kulle had become obsessed with soulstones, and so was attempting to create one of his own—the Black Soulstone, capable of harnessing the essence of many angels and demons. Containing these essences, filled with rage, hope, fear, and valor, Kulle would use the soulstone as a substitute for his own black and empty heart. The Black Soulstone was a "profane simul