Armor

Uncommon

While wearing the armor, you are immune to the faerie fire spell, and other creatures have disadvantage on any check made to discern a disguise you're wearing, such as by a mundane disguise or the disguise self spell.
 If you are a fey or have the Fey Ancestry trait, you can use an action to cast the disguise self spell from the armor while wearing it (save DC 13). The spell ends early if the armor is removed. Once this property of the armor has been used, it can't be used again until the next dawn.