Halfling Leg Shrapnel Cannon

The cannon has 3 bone chambers. As an action, expend 1 chamber to blast a 15-foot cone. Creatures in the cone make a DC 15 Dexterity save, taking 4d6 piercing damage on a failure or half on a success. On a failed save, choose one: push the creature 10 feet away, or make it bleed for 1d6 piercing damage at the start of its next turn. A creature can end the bleed early with an action and a successful DC 15 Medicine check. The cannon regrows 1d3 expended chambers at dawn.