General Vezax General Vezax is the twelfth boss encounter in Ulduar . He can be found in the Descent into Madness guarding the Prison of Yogg - Saron . Mana - based classes will have to deal with a lock on their regen , but will be able to restore it by destroying crystals that drop a residue on the floor . The Hard mode requires players not to break any of these crystals and not regen any mana . 25 - man abilities . General Vezax ' s hard mode is initiated if you do not destroy any Saronite Vapors and allow six Saronite Vapors to spawn ; once the sixth one spawns , they coalesce and become a with 12 . 4M hit points . 10 - man abilities . General Vezax ' s Hardmode is initiated if you do not destroy any Saronite Vapors and allow six Saronite Vapors to spawn ; once the sixth one spawns , they will coalesce and become a with 2M hit points . Strategy . Before pulling , assign casters in circle around General Vezax at a fair distance of each other in order to avoid spreading the Mark of the Faceless and too many ( unreactive ) people being hit by a Shadow Crash . When the tank pulls , all healers must come in melee range of the boss ( < 15 yards ) , in order not be concerned by the Mark of the Faceless and to leave the greatest space to the casters . Searing Flames must always be interupted when General Vezax starts casting it . When General Vezax casts Surge of darkness , the tank can stay where he stands , since Vezax ' s damages are healable . After every Surge of darkness , a melee or unoccupied ranged dps should go to kill the closest Saronite Vapor . All healers stand in until they have 6 - 7 debuffs , then step out . If that first regen is not enough , they can step in the vapor for another 6 - 7 debuffs ( once they have lost the first 6 - 7 debuffs ) . If the next Saronite Vapor is not near the boss , the tank will have to move toward it . All the raid must proceed very carefully ( healer and melee still in the 15 yards ) and casters still spaced from one another . Due to the use of the Energy Field left by a Shadow Crash , casters are less likely to have the need of a Saronite Vapor until the fourth or fifth Surge of darkness . When they will need it , while coming in melee range , they must be carefull not to be afflicted by a Mark of the Faceless . As long as DPS watch the aggro list , they can do damage continuously ( the General is not tauntable , so overhauling the tank will usually result in the death of the careless DPS player and possibly the entire raid ) . When a Shadow Crash heads toward a caster , he must move to avoid the AoE and then come back to stand in . In order to avoid spreading the Mark of the Faceless , only the caster targeted by a Shadow Crash should stand in it . In order to save mana , casters would be advised to DPS only when they stand in the Energy Field left by a Shadow Crash . While this can be frustrating , this is the safer way to save the Saronite Vapors for the healers ' need , besides the 10 minutes enrage allows to do it safely . Also of note are Lifebloom and Power Word : Shield in conjunction with Shadow Crash puddles ; since Power Word : Shield is an absorption effect , the absorbed amount is not reduced by Shadow Crash puddles but the mana cost is . Lifebloom ' s healing is reduced by the shadow crash puddles ; however it is possible to regain mana when the stacks bloom if they were initially cast in a Shadow Crash puddle . It is worthwhile to note that Lifebloom blooms do restore less mana than usual to the casting druid . " Notes : " Hard mode . To successfully perform this hard mode , players must fight Vezax for long enough without killing any Saronite Vapors that spawn , defeat the Saronite Animus that spawns , and then kill Vezax . To help somewhat with mana regen , a raid can stock up on , or alternatively . Ranged DPS will have to spare their mana for when they are on a shadow crash puddle to maximize the damage they can get with it . Aim towards getting General Vezax ' s health as low as possible without actually killing him . ( Below 8 , 000 , 000 is doable ) . With higher levels of gear , it ' s entirely possible to kill Vezax BEFORE the Animus spawns - if this happens , the group will not be awarded achievements , and no hard - mode loot will drop . The animus spawns at Vezax ' s starting position and must be picked up immediately by the offtank and kept in place so that melee does not have to move when switching targets at all . It will spam profound darkness every two seconds and melees for just about as much as Vezax without the periodic enrage ) All DPS must switch to the Animus and kill it as quickly as possible . If the raid takes too long , Profound Darkness will eventually outdamage any possible healing and wipe the raid . Shadow Crashes will one - shot anybody that gets hit by them so do not lose focus . Since the fight has been patched , Vezax no longer casts searing flames while the animus is up . Vezax will regain some health from Mark of the Faceless , so one player has to reapply a healing debuff onto him to minimize it such as an Arms Warrior with Mortal Strike or a Combat Rogue with Wound Poison on their main hand . ( Wound Poison " does " proc on a Kick ) After the animus is dead , the stacks will still be applied and all that is left to be done is finish the home stretch of Vezax ' s health . Keep in mind that the Profound Darkness debuff is still applied and Shadow Crashes will kill anybody that does not avoid them . The hard part of the achievement is done so long as nobody in the raid does something foolish to cause a wipe . Quotes . Sound Files . See " Sound Files of Ulduar : General Vezax " Related achievements . The following achievements are for the encounter ' s hard mode . Videos . 25 - man Hard mode encounter . < youtube > MYQB6sZtTvE < / youtube > Trivia . Namesake . His name bears a strong resemblance to General Rajaxx , a boss in the Ruins of Ahn ' Qiraj . This is yet another link between the two Old Gods that have been named to date : C ' thun in Ahn ' Qiraj , and Yogg - Saron in Ulduar . Watcher Tyr . For a time , it has been suggested that Tyr may have mutated into General Vezax under the influence of Yogg - Saron . This was however proven false as developers stated that Tyr was not in Ulduar when Yogg - Saron was defeated . Ahn ' kahet : The Old Kingdom . General Vezax , or a likeness of him , appears in briefly , in the first circular pool encountered ( just before choosing left or right to get to Elder Nadox ) , a face similar to that of Vezax flashes up in the pool .