Dullahan, Stage 3 (Headless Wail)

Boons:
- As an action, you shriek loudly from your headless stump. Each creature of your choice within 30 feet of you must make a Wisdom saving throw using a DC equal to your transformation save DC (8 + proficiency bonus + constitution mod). On a failure, they take 3d10 psychic damage, or half as much on a successful one. You gain a number of temporary hit points equal to the total damage dealt, to a maximum of 100.

You can use this feature once every short rest.

Flaws:
- Your severed vows drain your power further. If the creature affected by your Hunters Vow is alive more than 24 hours after you use the feature on them, in addition to the previous detriments, your maximum hit points are halved, and you are under the effects of the bane spell until the Vow ends.