CF: Additional Protection

The protection armor gives you increases dramatically, allowing you greater armor selection and/or greater defense.

You became trained in the next Step of armor proficiency your class gives, becoming proficient with Light Armor if you weren't proficient with any armor, Medium Armor if you were already proficient with light armor, and Heavy Armor if you were already proficient with medium armor.

Additionally, you gain Damage Reduction when you're not wearing your heaviest armor. While wearing any armor at least 1 below the heaviest you can wear (or you have Proficiency with Heavy Armor and you gain this feature), you gain damage reduction to everything, equal to your Half-Proficiency for each instance of this common feature you have.