Ignore Wounds

You have learned to shrug off the wounds you take through means of battle-meditation, allowing you to keep fighting long enough to get medical attention. If you take enough damage to bring you to 0 hit points or below, but not kill you outright, you can roll a d20. Add your proficiency bonus to the roll. You gain temporary Hit Points equal to your roll + your proficiency bonus. Once you use this feat, you can't use it again until you complete a Long Rest.