While all fiends seek to tempt mortals into lives of evil to increase their own numbers and power on their native planes, daemons are further driven by a supernatural hunger for mortal souls and use a variety of methods-not least of which is the cacodaemons' soul gems-to entrap them. On Abaddon and in other forbidding places across the multiverse, souls are simultaneously a delicacy, a trade good, and a source of magical power, and the daemons are among the greatest gluttons, merchants, and abusers of this spiritual "resource."