Durable
General Feat (Prerequisite: Level 4+)
You gain the following benefits.
Ability Score Increase. Increase your Constitution score by 1, to a maximum of 20.
Defy Death. You have Advantage on Death Saving Throws.
Speedy Recovery. As a Bonus Action, you can expend one of your Hit Point Die, roll the die, and regain a number of Hit Points equal to the roll.
Enhanced Recovery. You gain proficiency with the Endurance Skill. If you are already proficient, you gain expertise instead.
Additionally, when you expend Hit Point Dice to regain Hit Points, you can add your Constitution (Endurance) d20 Test bonus (Proficiency or Expertise plus Ability Score bonus) to the number rolled on the die. You can do so a number of times equal to your Proficiency Bonus, and regain uses of this feature when you complete a Long Rest.