Devourer (5e Feat)
From D&D Wiki
Prerequisites: At least 13 Charisma
Food nourishes the body, you know this more than anyone. You gain the ability to devour the body of a decreased target within 5ft of you.
You can consume the body of the target to gain one trait of the creature from a list by the DM (choice of the DM), which becomes active immediately.
The traits you may Devour include actions that do not require an attack roll to be made (i.e. multiattack, claws, shortbow, etc. cannot be gained, however traits such as a wolf’s pack tactics, may be gained). You may not gain legendary traits or actions, resistances, or spells with this feature. You can only gain up to your Charisma modifier number of traits this way. When you choose to devour beyond this number, those traits are then dormant. After a long rest you may choose a number of traits up to your Charisma modifier to be active until the next long rest, while the rest of the traits lay dormant until chosen.
The action takes one minute to complete and you are considered to be prone during this time. The creature must be freshly dead to gain their features, having died within 8 hours. Regardless of when the creature died, using this feature on a corpse is the equivalent of eating one day's worth of food for you. When you use this feature on a corpse, that corpse cannot be raised as an undead nor can it be targeted by Devour a second time. You can use this feature a number of times equal to your Charisma modifier (a minimum of once). When you complete a long rest, you regain all expended uses.