Prerequisites: Proficiency in Medicine.
Benefit: Using a healer's kit to stabilize a dying creature doesn't cost a use of the healer's kit. The stabilized creature regains contagiousness with 1 Hit Point. As an action, you can spend one use of a healer's kit to tend to yourself or a creature within 5 ft. of you restoring 1d6 + (Wisdom (Medicine) modifier + your character level) hit points. A creature can't regain hit points from this feat again until it finishes a short or long rest.
Normal: As an action, you can expend one use of the kit to stabilize a creature that has 0 Hit Points, without needing to make a Wisdom (Medicine) check.