Dirty Fighting

You know some dirty fighting techniques, and you're not above using them.

• When you take the Attack action and attack with a weapon that does not have the finesse or reach properties, you can use a bonus action to make an unarmed strike with a free hand.  This attack uses Strength, and the weapon’s damage die for this attack is a d4.  It deals bludgeoning damage.
• While you have a free hand, creatures provoke an attack of opportunity when they enter your reach or miss you with an attack.  This attack may only be made with your free hand using the same rules above.