Revised Great Weapon Fighting

You have honed your skills with heavy weaponry. You gain the following benefits:

• Pommel Strike: While wielding a weapon with the two-handed or versatile properties you can use a bonus action to make an attack with the pommel of your weapon. On a hit the target takes 1d4 bludgeoning damage and must make a DC 13 Constitution saving throw or be stunned until the end of its next turn. You can use this bonus action a number of times equal to your proficiency bonus, you regain all expended uses on a short or long rest.