This ancient served the night elves priestesses of the Temple of Elune, tending the beautiful Hanging Gardens. But after the malevolence of the Legion infected the Cathedral, the guardian absorbed fel energy through his roots. Now the twisted Agronox spreads corruption throughout the sanctuary he once protected, believing he has finally achieved his ideal state.
Smashspite's detestable brother, Thrashbite, has been dispatched to wipe out the mortals entering the cathedral's grand library. The dimwitted mo'arg lacks any respect for knowledge or learning, feeling petty satisfaction as he crashes through ancient artifacts and tramples priceless tomes.
With the Aegis of Aggramar socketed back into its cradle, Domatrax leads an onslaught of demons to destroy the relic.
On Mythic difficulty, Domatrax summons additional demons at 33% health. Also, if the Fel Portal Guardians are not destroyed within a specific time, an overfiend emerges.
Mephistroth orchestrates the Legion's invasion from the Broken Shores. With the forces of Azeroth pushing against his front line, Mephistroth has fallen back to the Cathedral of Eternal Night, where he will employ all his cunning to ensure the heroes fail in securing the Aegis of Agrammar.
On Mythic difficulty, Shadows of Mephistroth also use Fel Obliteration against the Aegis Wielder in order to knock the shield from their hands.