You have become adept enough with weaving blood magic to mitigate some of the harm of Sangromancy. You gain the following benefits.
Blood Magic. Choose a Sangromancy spell from any spell list of a level for which you have spell slots. You always have that spell prepared. You can cast it once without a spell slot, and you regain the ability to cast it in that way when you finish a Long Rest. You can also cast the spell using any spell slot you have.
Sanguine Potency. You have a pool of two d12s that you can expend instead of Hit Point Dice when you cast Sangromancy spells. Your pool regains all expended dice when you finish a Long Rest.