Dim-litten Blessing

You don't quite remember what Minerva has done to you, but she considers you her greatest work. You hold powers beyond even the divine, powers that warp your body in strange ways. Your skin has been stark white ever since you can remember.

Dim Healing Light. As a bonus action, choose an ally within 30 feet of you. You may expend any number of hit dice; if you do, you roll a number of d4s equal to the amount of hit dice expended and heal the chosen ally for a number of hit points equal to the result. When you heal an ally this way, you take damage equal to the number of dice rolled.