Versatile Weapon Master

You are a master of fighting with one handed and versatile melee weapons. Your training grants you the following benefits:

• When you are wielding a weapon that possesses the versatile property and another creature hits you with a ranged attack, you may use your reaction to add your proficiency bonus to your AC for that attack, potentially deflecting the ranged missile attack away from you. 
• Before you make a melee attack with a versatile weapon that you are proficient with and so long as you are not wielding a weapon or shield in your other hand, you can choose to take a -4 penalty to the attack roll. If the attack hits, you add +8 to the attack's damage.