Essense Thief

You may consume life essence from a charmed living creature you can touch as a bonus action, dealing 1d8 necrotic damage, regaining hit points equal to the damage dealt with this ability, and experiencing fragments of their memories. You gain one additional language or tool proficiency from the most recent (max 1) victim of this spell, chosen by the DM.

This damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).