Gruul the Dragonkiller Gruul the Dragonkiller is the gronn overlord of the ogres of Outland , ruling with an iron fist . He earned his " nom de guerre " ( and the emnity of Sabellian ) after slaughtering many members of the black dragonflight who had come to Outland in order to aid the Horde of Draenor . Gruul is the final boss of Gruul ' s Lair in the Blade ' s Edge Mountains . He drops Tier 4 Leggings tokens . He is the father of seven Gronn : Goc , Gorgrom the Dragon - Eater , Grulloc , Maggoc , Slaag , Skulloc Soulgrinder , and Durn the Hungerer . He has about 3 , 375 , 000 hit points ( Patch 2 . 4 . 3 ) , although with Patch 3 . 0 . 2 this has been reduced by 30 % . This boss is also part of ( what used to be ) the Serpentshrine Cavern attunement quest . This quest requires two signets . One of which , the Earthen Signet , drops directly from Gruul . The other , the Blazing Signet , drops from Nightbane in Karazhan . Serpentshrine Cavern no longer requires attunement as of June 20 , 2007 . The Dragonkiller . Information taken from the old official site : Background . Gruul the Dragonkiller is the father of the seven gronn lords of the ogres , and the most powerful of them . Although he seems to be nothing but a cruel brute , he possesses intelligence . In the events unfolded in the novel " Beyond the Dark Portal " — shortly after Deathwing invaded his home — Gruul was met by the lost heroes of the Second War : Khadgar , Turalyon , and Alleria Windrunner . They were after the Skull of Gul ' dan which Deathwing possessed . After that , Gruul and his ogre minions , along with the heroes , challenged Deathwing from his perch in Blade ' s Edge Mountains — killing his eggs and impaling his lesser black drakes on the mountain spikes . Infuriated by this act , Deathwing landed on top of them and attacked Gruul . Although clearly no match for the mad Aspect ' s power , Gruul was saved by Khadgar ' s miraculuous spell when he disassembled some of the adamantium plates that were holding Deathwing ' s unstable body together resulting in Deathwing ' s retreat . This led to a clear devastation for the black dragonflight in Outland . The results can still be seen as impaled black dragon corpses all over Blade ' s Edge Mountains . Tactics . Overall . Players will have ~ 10 minutes to defeat Gruul ( he has roughly 3 . 4 million hp ) , otherwise the buff stacks will annihilate the tank . At 16 + grows , Hurtful Strike can theoretically one shot your OT , making it vital to keep them topped off after every strike . The fight is basically a dps race , with an emphasis on raid survival . A high - stamina / high - DPS raid is favored for this encounter . Melee DPS is at a disadvantage , as Cave - ins often spawn on top of Gruul , and they may have to run out repeatedly in preparation for his Ground Stomp . The focus is primarily on the healers keeping several " tanks " alive , or in the case of dps , simply staying alive . Cave Ins , while becoming increasingly deadly , only tick after 3 seconds , allowing the quick - footed to exit without damage . Shatter positioning is very important , as too many deaths quickly lead to lethally low DPS . This is one of the few fights where Main Tank death is not an automatic wipe . Tanking duties simply shift down the ladder of offtanks , with the previous Hurtful Strike soaker becoming the MT . The main priority for the healers should be to keep track of the silence and have 4 / 5 healers hit HoTs on the tank to stay alive through the silence . This takes some timing and practice . Preparation . Gruul can ' t do any magical attacks , so it ' s advised to use amplify magic . If a Paladin in your raid has Improved Concentration Aura , it may help to place that person in a group composed of healers ; the Silence duration mechanic can save your raid on Reverberation at a high Growth stack , by reducing the amount of time they are silenced . It ' s also helpful for resto shaman to have the silence duration reduction talent , as there will be a lot of moving during the fight and Gruul ' s room is very large . Avoiding Shatter . Rogues can use Cloak of Shadows to remove the " Gronn Lords Grasp " movement debuff . Likewise , Paladins can also use Divine Shield to remove the movement debuff , and mages ability Ice Block remove the debuff as well , but note this does NOT prevent any damage being done because of Gronn Lords Grasp . Druids can shapeshift , but the debuff will reappear 1 – 2 seconds after . The Ground Slam knockback does not properly function if the player is on the rocks around the outer ledges of the room . Players there will be pushed only a short distance , if at all . Shatter will affect targets beyond line of sight , however players can wedge themselves into niches along the outside to avoid being launched inward toward Gruul . If you land quite some distance from Gruul , you are advised to run straight toward the outer wall , or toward the wall at an angle away from someone if you land near them . If you land between closer to Gruul than you are to the wall , and you can see other characters between you and the wall , move a bit toward the wall but be sure you keep your distance from those who are closer , and watch for tanks who will be moving toward Gruul . The key to a raid surviving Shatter is to trust those behind you to not come too close and kill you , and for those behind others to maintain their distance from those ahead of them . However , because the result of Ground Slam is completely dependent on chance , sometimes even a well - prepared raid will get an unlucky Ground Slam / Shatter combo that leads to a wipe . Main Tank Death at 1 / 4 HP . It is common for many guilds attempting to defeat Gruul to lose their MT around 1 / 4 health on Gruul . This is usually because the designated healers for the group are running low on mana and / or are not properly getting HoT rotations in before the silence . This fight is important for healers to have high mp5 to last a full 8 minutes . Healers should not be asking for Innervate any sooner than 5 – 6 minutes into the fight . If your tank dies a lot during the AoE silence . . . . If your group consists of 3 tanks ( which it should because of High King ) , you designate a main tank ( tanking Gruul of course ) , a Hurtful Strike tank , and a third tank that is also building up aggro ( just in case one of the other tanks die ) . This third tank should Intervene the main tank to take a hit once during the AoE silence so the healers don ' t have to worry about the main tank dying due to lack of heals . All healers must have HoTs ticking at all times during silence . Priests should have high Mp5 stacked and not require Innervates ( however , non - resto druids should still innervate healers at low mana and / or when they call out for it ) until the very end , if at all . DPS Needed . Raid - wise you will need an average of 6666 . 67 DPS to kill Gruul before he reaches 17 Grows ( at which point the tank is risking getting killed in one hit ) , or an average of 266 . 67 DPS per raid member ( assuming a full group of 25 ) . Assuming your raid has 3 tanks doing about 150 DPS each and 5 healers doing 0 dps , the remaining 17 DPS classes in the raid will need to average about 365 DPS on Gruul . - - Practical Suggestion - - Note : From practical experience , 17 grows is unrealistic unless you are lucky , or your tanks are overgeared . A group should try to DPS him down by grow 13 . A typical group will go with 6 to 7 healers as well . Calculation : Gruul has 3 . 8 million hit points . End of grow 13 equates to 14 * 30 seconds = 420 seconds . Assuming 6 healers , 3 tanks doing 150 DPS , and no deaths due to Ground Slam and Cave - in , the average raid DPS for the DPS group ( 16 ) is 8 , 598 DPS , or 537 dps per DPS player . A reasonable portion of the raid is spent moving and recovering from Ground slam so this is a minimum .