The Infernum is an ancient spellbook, writen during the opening days of the War of the Ancients, and catagories a little known form of magic. Magic sewn from pure and unmidigated hatred, enough of which that it is given manifest in the real world. This gave rise to a cult following of those who were proficient in it's use. Though extremely unstable, this magic is far more potent then most forms of mana-based magics. There are a few small exceptions to this rule, Khraven being one of them, who managed to harness his curse as a boon.