Armor Mastery Feature 13
Barbarian Your training and rage deepen your connection to your armor. Your proficiency ranks for light armor, medium armor, and unarmored defense increase to master.
Champion, Commander Your skill with armor improves, helping you avoid more blows. Your proficiency ranks for light, medium, and heavy armor, as well as for unarmored defense, increase to master.
Fighter Your skill with armor improves further. Your proficiency ranks for light, medium, and heavy armor, as well as for unarmored defense, increase to master.
Traits
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.
BarbarianThis indicates abilities from the barbarian class.
ChampionThis indicates abilities from the champion class.
CommanderThis trait indicates abilities from the commander class.
FighterThis indicates abilities from the fighter class.