The Theurgist's Throwdown is a Guild War that ran from July 31st to August 3rd, 2015. The reward for the top Guilds is the Dragonforged Armor Theurgist's Miraclegarb. The top Guilds (depending on placement) received either the Regular or Plus version of the armor.
iOS: The Untouchables
Android: Death Knights (BondBeyondTime)