You can use the Mark action as one action, or as a reaction when a hostile creature within your reach and line of sight takes the Attack action against a friendly creature. While marked by you and within your reach, the creature has disadvantage on attack rolls made against any creature other than you.
You and your company regain all expended stamina points whenever you roll initiative.
Any hostile creature that uses its movement within 10 feet of you must make a Charisma saving throw against your Charisma DC. On a failed save, the hostile creature becomes immobilized until the start of its next turn.