While originally introduced in House of Wolves, The Taken King updated the Prison of Elders with new challenges and rewards, making it relevant for Year 2 Guardians. This arena-style activity pits a fireteam of three against waves of enemies across multiple rounds, culminating in a boss fight. The Taken King introduced new modifiers and enemy types, including Taken, into the Prison of Elders rotation. Completing these challenges rewards you with Legendary gear, Sterling Treasures, and Variks reputation. There are different difficulty tiers, with the higher tiers offering better rewards but requiring greater coordination and higher Light Levels. It's an excellent activity for honing your combat skills and earning valuable loot.
