Proof of Loyalty Shadowlands is a buff you need to open the Gift of Devos treasure. The Gift of Devos is part of the Treasures of Bastion achievement. Here's how to get Proof of Loyalty in World of Warcraft Shadowlands.

Journey beyond the veil.#Shadowlands is NOW LIVE. ⛓️ ?

— World of Warcraft (@Warcraft) November 23, 2020

Proof of Loyalty Shadowlands: How to Get

To get the buff on you, you'll need to take the Flame of Devotion to the Brazier of Devotion in the Citadel of Loyalty. You're looking for a flame on a ledge to the north of the small arena nearby. The Arena is the westernmost circle on your map. The Brazier is right next to the Gift of Devos chest you want to open.

The flame is along the ledge above the arena.
The flame is along the ledge above the arena. / Photo by Blizzard Entertainment

You'll be making a little torch run. Taking damage means you have to restart. Take out all the enemies along the path before you carry the flame to make the run as simple as possible.

If you interact with the Sparkling Glitterfly near the flame, you'll get a speed buff to make this easier.

Once you've delivered the Flame, you'll get the Proof of Loyalty for two minutes and be able to open the chest. Inside you'll find the Benevolent Gong, an Instrument of Bastion that that improves the performance and morale of nearby friendly players in the Shadowlands.