Versatile Weapon Mastery

You’ve mastered the use of versatile weapons, and are able to change up how you fight with them on the fly. While wielding a versatile weapon you are proficient with, you gain the following benefits:

• While wielding your weapon with two hands, you can use a bonus action to shove a creature or to make a melee attack with the opposite end of the weapon. This attack uses the same ability modifier as the primary attack. The weapon's damage die for this attack is a d4, and the attack deals bludgeoning damage.
• If there is nothing else in your hands, you can use a bonus action on your turn to assume a defensive stance, increasing your AC by 1 until the start of your next turn.
• If you are proficient with shields, you can equip or unequip a shield using your bonus action on your turn.