Erudax Erudax is the fourth and final boss of the Grim Batol 5 - player dungeon in " " . Strategy . The primary mechanic for every class to avoid is Shadow Gale ; the gale covers the entire room , other than one safe spot about 10 yards wide . Everyone needs to watch for the cast mechanic . When Erudax casts Shadow Gale , a dark spiral will appear on the ground . This will be the safe spot , and everyone should turn and run to it . Note that the Gale will still cause damage if you are not fully within in the spiral , taxing your healer . After a few seconds , everywhere outside the safe spot will afflict a stacking debuff . There is a short run speed buff received just before the gale spawns , so most will make it to the spiral in time , however , those who are unable to find the safe spot suffer increasing shadow damage in the gale the longer they remain in it . Tanking Erudax will need to take place more or less in the center of the room . His melee damage on the tank is not extreme , even on heroic . He however will knock a tank across a room , every time he casts Enfeebling Blow . Due to other fight mechanics like the Shadow Gale , the tank must be in range of the safe spiral on the floor , and so you cannot simply back him up against a wall . Beware to not be knocked into the pools of lava as well . Tanks need to watch for , Enfeebling Blow ( knockback ) which is cast throughout the fight . The Blow causes a Feeble Body debuff for three seconds on normal mode , increasing damage by 100 % ( normal mode ) . When the tank is knocked back , they must kite Erudax for at least the three seconds it takes for the debuff to fade . On heroic , if a tank does not run from Erudax for 5 seconds or so , he will two shot some tanks . For the most part just waiting for the boss to reach you will end the debuff , just return to the center of the room as it fades . After Shadow Gale fades , a Faceless Corruptor will appear at the doorway . It will run to an egg and cast Twilight Corruption on it . DPS need to kill it before it finishes casting Twilight Corruption . It cannot be stunned but can be slowed and rooted . Should it finish casting Twilight Corruption , two Twilight Hatchlings will appear , and fly above the party , casting Twilight Blast on random people . Additionally , the Faceless Corruptor will cast Umbral Mending on Erudax , healing him for 20 % max health . Binding Shadows is cast on random party members ; as well as a binding spell that roots a player to the ground . Blinding Shadows however is dangerous , as it roots those within 8 yards of the target , and causes a shadow damage dot . The target of shadows should always run from the group , and those near the target must move away . Heroic : Erudax will now spawn two Faceless Corruptors instead of one ; They cannot be stunned or rooted but can and should be slowed ; Frost Trap , Chains of Ice , and Hamstring all work . The party should assign dps to each Corruptor , and a slow mechanic must be considered ahead of time . Any corruptor that makes it to the eggs will heal Erudax 20 % . The boss will now cast Shield of Nightmares on the corruptors , causing 19500 to 20500 shadow damage to any attacker near the corruptor . This will usually mean the second corruptor in your kill order must only be attacked by ranged , limiting the ability of melee groups to complete this boss . Enfeebling Blow will now cause a doubled debuff on the tank , and they will suffer 200 % damage from the boss . A party could successfully use a plate melee class to taunt off the tank very briefly , and then allow the tank to to pick the boss up after the debuff fades . The blows from Erudax during Enfeebling were around 14 . 5k on a moderately geared tank ; he inflicted melee blows typically around 12 . 8k . Binding Shadows will root players within 8 ( ? ) yards , and will channel heals to the boss until cleansed ; logs demonstrate the healing from Binding Shadows is leached from players , 7800 to 8200 per second . The spell hits for 22k , on average , after absorbs and resists , and ticks for around 6k . When the boss begins casting Shadowgale , the tank should move the boss into the Shadowgale cloud to allow all DPS to burn the boss during its duration . Additional , the Twilight Hatchlings hit harder . If you don ' t have the dps to kill the Corruptors quickly , you will get an overload of Hatchlings , causing more damage to the group . Videos . < br > < br >