Black Dragon Scale Mail

While wearing this armor, you gain a +1 bonus to AC, you have advantage on saving throws against the Frightful Presence and Breath Weapons of dragons, and you have Resistance to acid damage.
Additionally, you can focus your senses as an action to magically discern the distance and direction of the closest dragon within 30 miles of you that is of the same type as the armor. This action can't be used again until the next dawn.