Medium Armor Mastery Feature 17
Your skill with light and medium armor improves, increasing your ability to avoid blows. Your proficiency ranks for light and medium armor, as well as for unarmed defense, increase to master.
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.