Publication:Dread Codex/New Spells/Acid Symbol

Undead creatures animated by you are imbued with a undulating sigil that floats just above their heads. The body of the creature drips with thick grayish slime, and acid oozes steadily from its eye sockets. The spell affects a number of hit dice of animated undead equal to your level.

Undead with the acid symbol inflict an extra 1d6 points of acid damage when they strike with a natural weapon. Creatures touching or striking the symbol-bearing undead with a natural weapon also suffer this damage. The creature’s acidic touch deals 20 points of damage per round to wood or metal objects.

Armor and clothing dissolves and becomes useless immediately unless succeeding a Reflex save (DC 19). The acid cannot harm stone. A wooden or metal weapon that strikes a symbol-bearing undead creature also dissolves immediately unless if succeeds a Reflex save (DC 19). Additionally, undead under this spell have acid, cold, and fire immunity. This spell does not stack with other symbol spells.