Some priests offer their prayers to alien creatures best left forgotten. This ill-advised worship twists their minds in odd ways. These men make useful servants of evil due to the unnatural powers they can channel. The dark priests most favored by their strange gods have powerful protections, and defeating one of them is sure to bring down a terrible curse upon the victor.
No mortal knows whether the dark priests are undead themselves, or are so twisted by prayers and rituals to dark gods that they are no longer recognizable as living. It is only known that disease, curses, and hordes of undead follow a dark priest wherever his evil journeys may take him. Now, dark priests command a horde of undead that strives daily to breach the walls of Deephall.