Eternal Union is a legendary ring in Diablo III. It requires character level 50 to drop. Prior to Patch 2.1, it had the highest 'Life %' bonus in game, up to 35% at level 70. As of 2.1, it triples the duration of Phalanx (with Bowmen and Bodyguard runes only). Moreover, Avatars of the Order summoned through other skills are affected as well.