Armor

Rare attunement by a creature of good alignment

This enchanted scale mail armor is made from couatl scales that were collected by a generous celestial. You gain a +1 bonus to AC while you wear this armor. This armor does not impose disadvantage on Dexterity (Stealth) checks.

When you take damage from a creature within 10 feet of you, you can use your reaction to channel the good spirit within the armor and cause a bright, spectral couatl to appear above you. The spectral form strikes at the creature who damaged you, forcing it to make a DC 15 Dexterity saving throw. On a failure, the creature takes 4d10 radiant damage, or half as much damage on a success. Once this property of the armor has been used, it can't be used again until the following dawn.

Collection item

You gain an extra use per day of this item special feature for each other object of that collection set you are attuned with.