Thatch's Leeching Grasp

Make a melee spell attack against a creature you can reach. On a hit, the target takes 2d10 necrotic damage. In addition, you regain 2 hit points.

At Higher Levels: When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d10  and the hit points you regain increase by 2 for each slot level above 1st.