Stalwart

While wearing Medium Armor, you gain the Evasive feature. You must declare your use of Evasive before you roll to save or defend against an attack. When you are targeted by an attack, ability, or spell that deals damage, you can expend one use of Evasive to take zero damage from that attack, ability, or spell. You have one use of this ability.

While wearing Medium Armor, you also gain the Stalwart feature. When you finish a Short or Long Rest, choose Slashing, Piercing, or Bludgeoning damage. When you are targeted by an attack, ability, or spell would deal that type of damage, you can expend one use of Stalwart to take zero damage from that attack, ability, or spell. You must declare your use of Stalwart before you roll to save or defend against the attack. You have two uses of this ability

You regain one use of either Evasive or Stalwart upon doing basic upkeep on your armor (during a Short Rest) or all uses when you repair your armor (during a Long Rest).