An Armor Core is a material that is used to purchase Prison of Elders armor from Variks in the Vestian Outpost. An Armor Core can also be used in conjuction with a Weapon Core to purchase a Judgment's Chance, which contains a random Prison of Elders weapon or armor piece. An Armor Core is awarded upon the first completions of the level 32 and level 35 Prison of Elders challenges every week beginning at the Weekly Reset.