Guardian's Armor Feature 1
Even when you are struck, your armor protects you from some harm. While wearing medium or heavy armor, you gain resistance to physical damage equal to 1 + half your level. In addition, you can rest normally while wearing 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.