Blood Healing

You must be bleeding to cast this spell (loss of hit points from slashing or piercing damage). This injury can be self-inflicted.

A creature you anoint with your blood regains hit points equal to 1d12 + your spellcasting ability modifier, and you take 1d4 necrotic damage. This spell has no effect on constructs, but it does work on undead.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the healing increases by 1d12, and the damage you take increases by 1d4 for each slot level above 1st.