Bleed

You gesture at a creature within range, causing blood to erupt from its flesh and flow to you in a revitalizing stream.  Make a ranged spell attack against the target. On a hit, the target takes 2d8 necrotic damage, and you regain hit points equal to half the damage dealt. This spell has no effect on constructs or undead.
At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for each slot level above 1st.