Aura of the Elements is a warlock ability granted via [Cursed Auras], learned at level 67 for those with the Demonology specialization. While under the effects of [Metamorphosis], [Curse of the Elements] transforms into this aura, placing a debuff on the warlock that spreads the curse to all targets within 20 yards.
Patch changes
Patch 5.1.0 (27-Nov-2012): Aura of Enfeeblement and Aura of the Elements now cost 150 Demonic Fury (was 50), and have a 10 second cooldown.; Aura of the Elements and Aura of Enfeeblement can now be dispelled as Magic effects.