Dullahan

Superior Darkvision You can see dim light as bright light within 120ft of you and you can see dark light as dim light within 120ft of you. You can't discern color in darkness, only in shades of grey   Unseelie Magic You learn the cantrip Toll The Dead. When you reach 3rd level you can cast Find Steed once per long rest summoning a fey steed, once you have summoned a steed you may as a bonus action hide the steed in your shadow, or as an action, you may make the steed appear in an open space. When you reach the 5th level you may cast darkness once per long rest. Your spellcasting modifier for these spells is Wisdom.   Fey Ancestry You have advantage on saving throws against being charmed, and you cannot be put to sleep magically.   Headless Wrath When your head is stolen, you enter a rage like state. In this state, you cannot be frightened, you gain advantage on strength saves and checks, and when you score a critical hit you may roll an additional die of your weapons to your attack. Additionally, while in this state you cannot concentrate or cast spells, and attacks made against creatures other than the thief have disadvantage. This state lasts for a minute or until you regain your head.

Languages. Common, Sylvan