The self-proclaimed Lord of the Undead, Mallacus had the legs and head of a ram, a long tail, bat-like wings, and a humanoid body. He was the archenemy of Demogorgon and Graz'zt. A lordship from Mallacus grants you the following benefits:
- You gain resistance to radiant damage.
- If you are reduced to 0 hit points, you can immediately makes a DC 10 Constitution saving throw. If it succeeds, you are reduced to 1 hit point instead. Once you have used this feature you can not do so again until you complete a short or long rest. Each time you use this feature after the first, the DC for the Constitution saving throw increases by 5, and resets when you finish a long rest.
- You emanates a deathly aura that extends 30 feet in every direction from its space while it isn’t incapacitated. The aura is blocked by total cover. While in the aura, friendly undead are immune to the frightened condition and have resistance to radiant damage. Creatures of your choice suffer disadvantage on death saving throws while in the aura.
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