Necromantic

You’ve recently got in touch with your dead side. Aside from slowly rotting, things are pretty great.

• You add 1 Necromancy spell from your class spell list, of a spell level you can cast, to the list of spells you know or can prepare.
• When below one quarter of your maximum hit points, you can reduce incoming damage by half the spell level of the highest level Necromancy spell you know or have prepared.
• As an action, you can detach or reattach one of your hands. While detached, your hand functions as a Crawling Claw (Monster Manual, pg. 44) that obeys your commands.