CF: Additional Protection

Increase your Armor Proficiency by 1 step (From No Armor Proficiency to Light Armor and Bucklers, then Medium Armor and all shields sans Tower Shields, to Heavy Armor and all Shields). If you gain or already have Heavy Armor proficiency when you gain (or already have) this common feature, you gain damage reduction equal to half-proficiency for each instance of this common feature you have. This Damage Reduction exists as long as you are wearing armor.