Sword & Board Fighter

You've learned to use your sword & shield together as a seamless unit. You shield is now, not just for protection, but used also for offense. You gain the following benefits while you are wielding a sword & shield:

• While you are wielding a shield and a weapon with the versatile property, you may perform damage rolls with either of that weapon's damage dice when making a melee attack with that weapon. You are still treated as if you were holding that weapon in one hand.
• While you are wielding a shield and a weapon with the versatile property, other creatures provoke an opportunity attack from you when they enter your reach.
• You have proficiency when using a shield as an improvised weapon. As long as you take the Attack action on your turn, you can use one of the following bonus actions: 
  • Shield Shove: You can use your shield to make a melee attack to shove a creature within 5 feet of you, either to knock it prone or push it away from you. 
  • Shield Bash: You can use your shield to make a melee attack against a creature that is within 5 ft of you. On a hit, the creature takes bludgeoning damage equal to 1d4+ your strength modifier and must make a constitution saving throw (DC 8+Proficiency Bonus+Strength Mod). On a failed save, the creature is stunned until the beginning of their next turn. This condition ends if the creature takes damage. You have 1+ plus proficiency bonus uses per short rest.