Concubus’ Kiss

Choose a target within range. It must succeed on a Constitution saving throw or take 1d10 necrotic damage plus your Charisma Modifier. You gain half of the damage dealt in temporary hp.

The damage dealt by the spell increases to 2d10 at 5th level, 3d10 at 9th level, 4d10 at 13th level and 5d10 at 17th level.