You understand that your goal is more important than your survival, like the guardian Solwatch of old, and have gained the ability to channel all of your conviction into a desperate attack. Whenever you make a weapon attack roll, you can reduce your hit points by three-fourths. If you do, roll a number of d10s equal to your proficiency bonus. The attack gains advantage and deals additional radiant damage equal to the number rolled if it hits. Regardless of whether the attack hits or misses, each creature within 5 feet of the target other than you takes radiant damage equal to half the number rolled. Whenever you use this feat, you also gain a level of exhaustion.