Symbol of Torment
Symbol of Torment is a monster-only spell that calls on the powers of darkness to cause agonising injury to everything in sight. It ignores magic resistance and reduces the by half the health of all creatures in sight that do not possess torment immunity. While the spell technically affects all monsters in sight, all monsters that cast it are torment-immune, and it is most commonly seen in areas such as Tomb or Hell, where nearly all of the inhabitants are also torment-immune.
There are numerous ways for a player to duplicate this effect, although beware that doing so will target every living thing in your LOS (including you). For a list of methods and ways to minimize the costs, see torment.
History
Prior to 0.8, players could cast a version of Symbol of Torment as a level 6 Necromancy spell. Unlike the monster version, this spell would not function if the caster had Torment immunity.
