Devour

A spectral mouth replaces your hand and bites the target dealing 1d6 necrotic damage. You can also choose from two options. Drain, you heal for half the damage of the spell. Curse, you give the target disadvantages one of their saving throws until the beginning of your next turn. 

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot level above 1st.