Unbreakable Expertise Feature 5
With training, you understand how to best block hits with your armor. Your proficiency rank with medium armor and heavy armor increases to expert.
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.