Drain Emotion

You reach out towards a creature you can see, attempting to drain it of emotion and will.  The target must succeed on a Charisma saving throw or be dealt 1d6 psychic damage.  If the target fails by half of your spell save DC or more, you regain hit points equal to half of the damage dealt.

This spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6) and 17th level (4d6).