A soulless necromancer may occasionally appear near the chaotic rift north of Draynor Village during the 2018 Hallowe'en event. He will summon soulless armoured zombies to surround and attack the pillars, preventing them from being stabilised. He may also summon soulless unarmoured zombies to surround himself for defence. They cannot be attacked through normal means, and must instead be defeated by transfering souls from Death's soul rift, allowing Death to take them down once they become mortal.
Attempting to attack them results in the below message:
This zombie doesn't have a soul! Restore it so that Death can take him down!