Grapple: Submission

You leverage your grapple so failing to escape it causes injury. You may replace one of your attacks with a special grapple maneuver against a creature you have grappled. If the additional grapple check succeeds, the grapple is now additionally considered a submission hold. Failing to escape a grapple that is a submission hold causes the attempting creature to take one roll of its hit die plus your athletics modifier as bludgeoning damage.