Parry and Riposte

As a bonus action on your turn, if you are wielding a melee weapon in one hand and are wielding no other weapons, you may prepare to parry. If a creature makes a melee attack against you on their turn, you may choose to parry, in which case you will make an attack roll against the creature's attack. If your attack roll is higher than your opponents, you successfully parry the attack, preventing all damage and other harmful effects of the attack. You may then riposte, making an Attack of Opportunity against the creature.