Deathgrip Deathrattle

Your endurance and anger allow you to push yourself further than most. When you drop to zero hit points, you make a free unarmed strike against one creature within range. The attack automatically hits and the target is grappled and must make a strength saving throw. On a failed save, the target is incapacitated by your grip for a number of rounds equal to your constitution modifier. On a successful save, the target is not incapacitated but it is still grappled by you for the duration. You can use this feature once per long rest.