How To Gruul

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How To Gruul

Post  Darkbash on Mon Mar 10, 2008 1:49 pm

Tactics

Overall
Players will have ~10 minutes to defeat Gruul (He has roughly 3.4 mil. 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 keeping several "tanks" alive, in the case of healers, or simply staying alive yourself, in the case of DPS. 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 Priests to have high Mp5 to last a full 8 minutes. Priests 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 until the very end, if at all.

DPS Needed
Raid-wide 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 your tanks are overgeared and/or are lucky. A group should try to DPS him down by grow 13. A typical group will go with 6 to 7 healers as well.
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 8598 DPS or for per DPS player is 537 DPS. A reasonable portion of the raid is spent moving and recovering from Ground slam so this is a minimum.
cheers
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Darkbash

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Re: How To Gruul

Post  Djungelola on Mon Mar 10, 2008 11:23 pm

Nice finish with some wall-of-math there, Good job man =)
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