Couatl Herald's Mantle (Patreon)

Wondrous item, uncommon (requires attunement by a creature of good alignment)

This magic cloak is given to those deemed kind-hearted and responsible by a celestial. While wearing this mantle, you have advantage on saving throws to resist becoming poisoned or diseased. In addition, you are immune to any effect that would sense your emotions.

Flight of the Couatls. While you're attuned to 3 items with this feature, you gain a flying speed of 30 feet. If you already have a flying speed, this speed is in addition to your existing flying speed.

The few of us that remain here are tasked to create a new city. One that flourishes as much as, if not more than, the first. We will live in harmony and order, in kindness and in acceptance. The strength in our hearts will carry us forward. And if we can't fulfill our task, let us hope that those who follow us can.

— Final excerpt from the journal of Brother Riane, last of the Couatl Heralds from the Lost City of Hearth.