Parrier

Increase DEX or STR by 1

When hit by a melee Weapon Attack while weilding a weapon you are profeceint in (or have improved unarmed attacks) you can Spend a reaction to roll an attack roll, if your attack roll is the same or higher than the attackers roll you take no damage (except for any elemental damage you were dealt because of the attack) and increase your AC by 1 for 1 turn. 

You can parry a number of times equal to your proficiency bonus