Erudax

Erudax, the Duke of Below, is the fourth and final boss of Grim Batol.

Adventure Guide
''Deathwing has dispatched one of his greatest lieutenants to discover the secret that several mighty red dragons have died to protect. From the cavernous realm of Deepholm, this faceless general will bring to bear the next generation of draconic power to obliterate those foolish enough to challenge him.''

Strategy
Erudax periodically casts Binding Shadows at random party members; it is a projectile-based AoE attack that should be avoided if possible; the debuff it leaves behind roots and damages players, as well as healing the boss. Enfeebling Blow will knock back the tank and place a +damage taken debuff; the tank should avoid re-engaging Erunax until the debuff has faded.

Eventually, Erudax will announce a Shadow Gale (yell), spawning a dark swirl somewhere within his room. Party members must move to the center of the swirl to avoid Shadow Gale's AoE damage. After Shadow Gale, a Faceless Corruptor (two on Heroic difficulty) will appear at the doorway. The Corruptors cannot be stunned, but should be snared and killed before they manage to hatch any eggs. Should they finish casting Twilight Corruption, two Twilight Hatchling adds will appear and do random party damage through out the remainder of the fight; if the corruptors are not killed immediately after that, they will also heal Erudax for 20/40% of his health. This can and should be interrupted.

It is imperative that the Corruptor adds die before hatching any eggs. Consider explicitly assigning DPS to specific adds to ensure that both are snared and killed within the desired time frame. Root effects do not work, but slow effects do. Crippling poison, slow, frostbolt, frost trap, and chains of ice all are effective.

Related achievements

 * Grim Batol (achievement)
 * Heroic: Grim Batol
 * Heroic: Grim Batol Guild Run
 * Don't Need to Break Eggs to Make an Omelet

Objective of

 * The Time of Dragons

Quotes

 * Aggro
 * yell


 * Summoning Faceless Guardian
 * yell


 * Shadow Gale
 * yell


 * Killing a player
 * yell
 * emote


 * Death
 * yell ("They do not die; they do not live. They are outside the cycle." This is untranslated in game, but the same text Herald Volazj says. Mindbender Ghur'sha also utters an abridged version of this line on death.)

In Hearthstone

 * The Eldritch Horror card in Hearthstone: Whispers of the Old Gods bears a striking similarity to Erudax, being a red C'Thrax in a stony chamber filled with dragon eggs.