Armor Expertise Feature 7
You have spent so much time in armor that you know how to make the most of its protection. Your proficiency ranks for light, medium, and heavy armor, as well as for unarmored defense, increase to expert. You gain the armor specialization effects of medium and heavy armor.
Traits
Common
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.