Mythic merits and flaws - Starving Decay (• •)

Your undead body is constantly on the verge of reverting to a corpse and only staving off Hunger keeps you from decaying.

At any point in which your Hunger is 3 or higher your body shrivels and decays, incurring a two-dice penalty to physical tests as well as social interactions with mortals, not to mention risking the Masquerade.