Crimson Harvest*

A wave of blood sweeps out from you in a 15-foot Emanation. Each creature of your choice in the wave must make a Dexterity saving throw, taking 3d10 Necrotic damage on a failed save, or half as much damage on a successful one.

If you damage at least one Small or larger creature, one creature of your choice that you can see within the Emanation regains a number of Hit Points equal to half the damage roll.

Using a Higher-Level Spell Slot. The damage increases by 1d10 for each spell slot level above 3.