Treasure Key

"Used to access the Queen's Crystal Barrows beneath the Prison of Elders."

- In-game description

A Treasure Key is a consumable reward. It can used once to open a loot chest in the treasure room that is accessible immediately after completing a Prison of Elders challenge. Prison of Elders loot chests contain randomized loot but consist primarily of legendary Queen themed weapons, a chance for an exotic weapon, and on challenge modes, a chance for Etheric Light.

How to Obtain

 * Complete the House of Wolves story (guaranteed)
 * Opening an Ether Chest (random chance)
 * Opening one of the smaller chests in the Prison of Elders (random chance)
 * Completing the first new Wanted bounty each week (guaranteed)