Demonic Hunger (5e Feat)
From D&D Wiki
The blood of the demon symbolizing gluttony runs through your veins, giving you an insatiable hunger that can never be satisfied. You gain the following benefits:
- You gain a bite attack as a natural weapon, which you can use to make unarmed strikes. If you hit with it, you deal piercing damage equal to 1d8 + your Strength modifier, instead of the bludgeoning damage normal for an unarmed strike.
- You can consume a creature that has been reduced to 0 hit points within the last minute, as an action. After eating it, your body grows in one size category, and you deal additional damage equal to 1d4 with your melee attacks using Strength. You also regain 5 hit points at the start of your turn but if you take radiant damage or damage from blessed or holy objects, you don't regain 10 hit points at the start of the your next turn. This transformation lasts for 1 minute, and you can't use it again until you finish a long rest.
- You can consume and digest any type of non-magical object or organic matter you are able to break down and chew it as if it were normal food and being satiated by it. Consuming matter for 1 minute give you enough nourishment for a full day.