Bodak

Bodaks are found underground. Entrances to the underground are commonly found around Mount Hotenow. Their lairs are not deep underground so they have access to the over world when needed. Bodak's are always on the prowl looking for souls to kill in Orcus' name. As a result, miners will take with them birds, often pigeons, when they travel to areas where Bodaks are known to be found, as animals instinctively flee from Bodaks. Miners rarely go to Bodak infested areas and will only direct people there but not accompany them.

This particular bodak resides with 2 necrolytes to attract unsuspecting travelers. Necrolytes look like ordinary civilians with paler skin. They appear passed out, lieing slumped against either side of a narrow hallway near the bodak's lair. When traverler's approach the, bird with them will squawk and fly away. Once the PCs get close, the necrolytes will jump up and attack. One round later, the Bodak appears.

Necrolyte - https://www.dandwiki.com/wiki/Necrolyte_(5e_Creature)