Unity of the Orders

Source
This item is a quest reward from the following:


 * Armies of Legionfall (quest)
 * Paragon of the Legionfall Armies
 * The Bounties of Legionfall
 * Self-Fulfilling Prophecy

It can also be found inside Curious Wyrmtongue Cache.

Donating towards the construction of a Broken Shore building also rewarded this item. It was replaced in patch 7.3 with Lesser Unity of the Orders.