Breather

Adept at taking advantage of brief breaks in combat, you gain the following benefits:

• As an action, you may expend a number of Hit Dice to heal yourself in combat, if you are farther than 5 ft from the closest threat you can perceive. This number is equal to your Proficiency bonus.
• If you use the Disengage action on your turn, you may perform this as a bonus action.
• Driven by a surge of adrenaline, this action cannot be taken if you are not in combat or in immediate threat of danger.