This creature appears as a rotting humanoid with bluish-gray skin and blackish, unkempt hair. Its eyes are sunken and gray and its hands end in razor-sharp talons with blackened nails.
Speed 30 ft., swim 40 ft.
Str 18, Dex 15, Con —, Int 10, Wis 14, Cha 14
When reduced to 0 or less hit points, a brykolakas is destroyed and its body changes into a pool of deadly poison that quickly (1 round) fills a 10-foot cube (if its in the water when destroyed). The poison disperses in the next round. Creatures in the area are exposed to the poison.
If a brykolakas is slain on land, its body collapses into a puddle of briny liquid that quickly covers a 10-foot square area. The puddle lasts for 1d2 rounds before dispersing. Creatures touching the puddle are exposed to the poison.
A brykolakas’s claw attacks deliver a virulent disease that breaks down the victim’s internal organs (causing internal bleeding and a darkening of the skin). This supernatural disease is called brykolakas fever. The save DC is Charisma-based.
A brykolakas can remain in an alternate form until it assumes another or until the next sunrise.
A brykolakas can survive out of the water for 6 hours. After that, its body begins drying out and within 1 hour, the brykolakas crumbles into dust unless it can reach saltwater before the hour passes.