You can stitch wounds together as neatly as fabric. As a Bonus Action, you can stitch the wounds of a willing creature within 5 feet of you, causing it to regain Hit Points equal to 1d10 plus your Craftsman level.
You can use this feature a number of times equal to your Masterwork Bonus. You regain one expended use when you finish a Short Rest, and you regain all expended uses when you finish a Long Rest.