Terror Eater

The terrified screaming of your enemies is music to you, and their shrieks of desperation revitalize your body.

Target up to ten frightened creatures in range that you can see. The target creatures do not have to be frightened of you, or an ally. Each target must make a Wisdom saving throw against your spell DC. On a successful save, the target creature will take 3d6 psychic damage, and the spell's effect on them will end. On a failed save, the target takes 6d6 psychic damage, and you will gain hit points equal to half the psychic damage the target received.

Casting this spell at a spell level higher than 5th increased the size of the damage die by one step for each level after 5th; 6d8 at 6th, 6d10 at 7th, 6d12 at 8th, and 6d20 at 9th.