G'huun Uldir Raid Strategy Guide

By FatbossTV Updated: 2018/11/24

G'huunclicking hereG'huun

Phase one consists of fighting Thousand Maws adds as G'huun attacks the raid from his protective lair. Groups of players must carry Power Matrix orbs to a Reorigination Drive to trigger a Reorigination Blast to begin phase two.

Phase two has the raid facing G'huun directly. The group should trigger a Reorigination Blast to remove a huge chunk of health from G'huun's large health pool and get him to 20% to start phase three.

Phase three is a race to the finish, as players need to defeat G'huun without the assistance of the Reorigination Blasts, before the raid is overwhelmed by the ever increasing raid damage.

G'huunLootBattle for Azeroth Item Level Guide

Cloth: Amice of Corrupting Horror, Cord of Septic Envelopment

Leather: Striders of the Putrescent Path, Tunic of the Sanguine Deity

Mail: Spaulders of Coagulated Viscera

Plate: Helm of the Defiled Laboratorium, Hematocyst Stompers

Vanquished Tendril of G'huun

Intellect Staff: Heptavium, Staff of Torturous Knowledge

Gun: Re-Origination Pulse Rifle

Agility Fist Weapon: Lancet of the Deft Hand

Shield: Barricade of Purifying Resolve

Quick TipsUpper Platform

Send pairs of players to transport the Power Matrix north along the path to deposit it into the Reorigination Drive.

These players should use movement abilities to traverse the path as quickly as possible.

Damage the Amorphous Cysts in your path to reduce the radius of their slowing Undulating Mass aura.

Players holding the Power Matrix will eventually become rooted. Use the extra action button to throw the Power Matrix to your partners location!

After a Power Matrix has been deposited, the players who touched it will not be able to touch another one for 5 minutes.

Trigger one Reorigination Blast in phases one and two by depositing the Power Matrix orbs into the drive.

Players moving up to the Upper Platform should be topped beforehand to ensure they remain healthy whilst out of range.

A healer may need to accompany a pair of players on the Upper Platform if the pair has Putrid Blood stacks.

All phases

Move to the edge of the encounter space to safely deposit the Explosive Corruption debuffs.

Dodge the Virulent Corruption orbs that radiate away from the Explosive Corruption debuff.

Phase One

Focus down the Cyclopean Terror adds and interrupt their Torment casts.

Stand near the Dark Young when it casts Dark Bargain, but do not gain two stacks or you will become mind controlled.

Bring mind controlled players to 50% health to break the effect.

Do not bother attacking G'huun during the phase, as he heals all damage taken via his Blood Shield passive.

Phase Two

Stack as group next to the boss to help healers more efficiently deal with the incoming damage from Wave of Corruption.

Stack on the player afflicted with Blood Feast to remove your Putrid Blood stacks.

Nuke the Gibbering Horror add whilst stopping your casts when it attempts to interrupt you via Mind-Numbing Chatter.

Phase Three

Move away from the marked locations at the beginning of the phase when the ceiling begins to Collapse!

The Reorigination Drive will not work during this phase.

Stack as group next to the boss to help healers more efficiently deal with the incoming damage from Wave of Corruption.

The Putrid Blood stacks will not be removed in this phase... kill the boss before the damage gets out of control!

Face away from G'huun when he casts Gaze of G'huun, otherwise you'll be feared for 6 seconds.

Tank-Specific Quick TipsPhase One

Position the Dark Young adds near to the Cyclopean Terrors as to hit them with Dark Bargain.

Move away from the Dark Young when it casts Dark Bargain, otherwise you'll take 25% more damage.

Phase Two

Position G'huun in the middle of the encounter space.

Taunt off of one another when G'huun gains 6-8 stacks of Growing Corruption.

The off tank should pick up the Gibbering Horror when it spawns and keep it near to G'huun to allow DPS to cleave.

Phase Three

Position G'huun in the middle of the encounter space.

Taunt off of one another when G'huun gains 6-8 stacks of Growing Corruption.

G'huun AbilitiesEncounter SpaceG'huun

Power Matrix

The Upper Platforms can be accessed via a ramp found towards the south of the encounter space.

Dragging any phase two/three enemies up to these platform areas will reset the encounter.

Players on the platforms will be out of line of sight for all players on the arena floor.

Players on the platform can jump down from the upper platforms down to the arena floor.

Power Matrix

This Power Matrix orb will always spawn on the west platform first. After that Power Matrix has been used or destroyed, it will then spawn at the eastern platform.

This will continue to alternate throughout the fight, with the pattern only resetting after a Reorigination Blast has occured.

Power MatrixPower Matrix

This will grant the module 35 energy. Upon reaching 100 energy, it will cast Reorigination Blast whilst resetting it's energy back to 0.

Reorigination Blast deals ticking damage to all enemies and players over 24 seconds. This also stuns all enemies, including G'huun, and increases the damage they take by 100% over the abilities duration.

The group needs to trigger two Reorigination Blasts throughout the encounter, first to transition the boss into phase two and then an additional one during phase two to deal substantial damage to the boss and adds.

Power MatrixPower Matrix

The player holding the Power Matrix can cast all of their abilities like usual, however their movement speed will be reduced by 20% every 2 seconds.

After 10 seconds, they will become rooted to the spot. Rooted players can still teleport, through the use of spells like blink, but cannot dash or leap, through the use of spells such as Fel Rush.

At this point, players must use their extra action button to Throw Power Matrix to a target location within 20 yards.

If a different player stands at this location, they will catch it. If the Power Matrix hits the ground, it will be destroyed and will a new matrix will spawn on the opposite Upper Platform.

Amorphous CystUndulating MassPower Matrix

After depositing the Power Matrix, the pair of players should jump back down into the encounter area, rather than run along the Upper Platform and down the ramp, as to quickly rejoin the group.

Players should use movement abilities to make this task as quick as possible, making classes such as Demon Hunters, Warriors, Monks and Mages exceptionally good choices for this job.

If classes such as these save their movement abilities and use them all at once, they are able to clear the majority of the path in one go, especially if they are assisted by warlock gateways.

Amorphous Cyst

These adds will not directly attack players, instead choosing to remain dormant.

Each cyst has an Undulating Mass aura around it which deals low ticking damage and reduces the movement speed of all players who stand within it by 75%.

Players can temporarily reduce the radius of this aura by damaging the add.

The amount of damage done to the Amorphous Cyst is irrelevant, instead each instance of damage will cause it to shrink, regardless of how much damage that is.

This makes abilities that deal damage frequently stronger than those that deal large bursts of damage infrequently.

The pair of players that are transporting the Power Matrix along the platform should attempt to reduce the amount of Undulating Mass they encounter along their path.

Power MatrixPower MatrixImperfect Physiology

Imperfect Physiology is an irremovable 2 minute debuff which prevents the player from interacting with the Power Matrix in any way, including picking it up or catching it.

This forces the raid to send different pairs of players to deal with each new Power Matrix.

The group is likely to get through 6 pairs of players before the first pairs Imperfect Physiology debuff expires. The group should assign players to these pairs before pulling the boss.

This damage isn't high enough to require a healer to be present on the platform, as long as the players were healthy before moving up and they work quickly.

During phase two, a healer may need to accompany the pair of players to ensure they remain healthy if they are also afflicted with other damaging debuffs, such as the Putrid Blood dot.

Phase OneG'huun

He does not need to be tanked during this time, and he has the Blood Shield passive which heals him for 5% maximum health every 0.5 seconds.

Players should not attempt to deal damage to the boss during this time, as their damage will just be immediately out-healed, instead focus your efforts on killing the different adds that spawn throughout the phase.

Explosive CorruptionG'huunExplosive Corruption

This 6 second debuff will explode upon expiration, dealing damage to all players within 5 yards and creating a patch of Blighted Ground.

Blighted Ground deals damage and slows the movement speed of any player who stands within it by 70%.

As these patches will not be removed until a Reorigination Blast occurs, players should move towards low traffic areas to place them out of harms way, such as one of the edges of the encounter space.

Explosive CorruptionVirulent Corruption

By moving away from the raid, the afflicted player gives the raid more time to dodge these incoming Virulent Corruption orbs.

G'huunThousand MawsCyclopean TerrorCyclopean Terror

The terrors will spam cast Torment at a random player, dealing ever increasing shadow damage every 3 seconds over the 15 second cast.

All terrors should be interrupted as often as possible. The group should utilise stuns and silences to lock the terrors out for long periods of time.

The terrors should be killed as the highest priority, as the group is unlikely to be able to cover all of their casts over prolonged periods of time.

Dark YoungDark YoungCyclopean TerrorMassive Smash

The tank should ensure they have active mitigation to help reduce the impact of this hit.

Immobile tanks may wish to taunt off of each other after each Massive Smash as to help keep the Dark Young add relatively still.

Dark BargainDark YoungDark Bargain

This 4 second uninterruptible cast will apply a debuff to all players and enemies within 10 yards, increasing damage and healing dealt and damage taken by 25% for 30 seconds.

The tank should position the Dark Young within 10 yards of as many Cyclopean Terrors as possible to apply this damage taken increase debuff to them.

The raid should also stack up in the ability to gain the output increasing effects, whilst the tanks avoid the ability.

This is easily done as the Dark Young will not move during the cast, allowing the tanks to easily move away.

If a player gains 2 stacks of Dark Bargain, they will become mind controlled and turn on their allies, so all players must avoid gaining 2 stacks of this ability.

If a player does become mind controlled, the group must damage them down to 50% of their maximum health to break the effect.

Dark YoungCyclopean TerrorDark Young

The group may wish to deliberately keep a Dark Young add alive to keep high up-time on the output increasing Dark Bargain cast.

That being said, the group should avoid having two Dark Young adds alive at any given time as the tanks will struggle to deal with the incoming damage.

Reorigination BlastReorigination Blast

Any remaining Thousand Maws adds active at the time of the Reorigination Blast can be ignored, as the stun combined with the damage from the ability will kill them without the assistance of the raid.

As soon as the blast has begun, the group should stack up to allow the healers to efficiently heal the group.

Healers should not need to use any cooldowns to counteract the damage from this Reorigination Blast, as there should be no other sources of incoming damage.

Groups with a Discipline Priest may wish to stack towards the northern parts of the Arena Floor to allow that player to deal damage to G'huun and heal the group via Atonement.

Other players should not bother damaging G'huun during this time, unless it is beneficial for their DPS at the end of the Reorigination Blast, as the Blood Shield passive is still active.

Reorigination BlastG'huun

At this point he will lose his Blood Shield passive and engage the group directly. Phase two has now begun.

Phase Two: 100% - 20%G'huunThousand MawsExplosive Corruption

This ability should be dealt with in the same way as phase one, by moving to the edge of the encounter area as to spawn the Blighted Ground patch and Virulent Corruption orbs away from the raid.

This debuff will always be applied to the tank who is currently tanking G'huun. The off tank should taunt to allow this tank to place their debuff at the side of the room.

Corrupting BiteG'huunCorrupting Bite

Each consecutive melee attack against the same target will buff G'huun with a stack of Growing Corruption which increases the damage of Corrupting Bite by 15%.

These stacks will reset upon melee hitting a new target. The tanks should taunt off of each other when G'huun gains 6-8 stacks of Growing Corruption to keep incoming damage low.

Wave of CorruptionG'huunPutrid Blood

Putrid Blood is an endless-duration debuff which deals low ticking damage every 1.5 seconds and will stack each time a player is hit by a Wave of Corruption.

The raid should stack up behind, or to the side of, G'huun as to allow healers to efficiently out-heal this incoming damage.

Wave of Corruption will not hit players who are on the Upper Platforms.

Do note: This stack strategy does not work on heroic mode! Please see the heroic section of the guide for more information.

Blood FeastBlood FeastWave of CorruptionBlood Feast

This 10 second debuff immobilizes the player over it's duration. Upon expiration, all players within 10 yards will have their Putrid Blood stacks reset and a Gibbering Horror add will spawn.

The entire raid, including the tanks, should stand within 10 yards of the Blood Feast afflicted player to ensure they remove their Putrid Blood stacks.

As soon as the add spawns, the entire group should focus it down whilst cleaving damage on to the boss.

The tanks need to ensure that that one of them holds the boss whilst the other holds the add, as to avoid one tank taking too much damage.

Shortly after the Blood Feast debuff has expired, G'huun will begin to cast Wave of Corruption once again.

Gibbering HorrorBlood Might

The amount of Blood Might stacks the add spawns with is equal to the amount of Putrid Blood stacks that are removed by the Blood Feast.

This should not dissuade players from removing their stacks, as removing the Putrid Blood stacks is far more important than reducing the Blood Might stacks the add spawns with.

This add will also cast Mind-Numbing Chatter which deals damage and interrupts casting for 3 seconds for all players.

Players should stop casting as the Mind-Numbing Chatter cast completes to avoid being locked out for 3 seconds.

Reorigination BlastGibbering HorrorPutrid Blood

This should be done by having two Power Matrix groups deliver at the very beginning of the phase, followed by a third and final pair just as the second add spawns.

At this point the raid should use bloodlust, potions and damage cooldowns to nuke the boss down, ignoring the add as the Reorigination Blast damage will kill it alone. This should get the boss to 20% and transition the group into phase three.

Some pairs are likely to have stacks of Putrid Blood whilst on the Upper Platform during phase two. These pairs should include a healer or the players may need to be accompanied by a healer to ensure they remain healthy.

G'huunPhase Three: 20% - 0%G'huunReorigination Blast

The ramps leading to the Upper Platforms will also be coated with Amorphous Cysts, as to prevent players from easily accessing the area.

The group must rely on their damage alone to finish off the boss.

Collapse

This marks multiple areas of the encounter space. These areas will each have a part of the ceiling fall on them, dealing significant nature damage and knocking back the entire raid.

As the damage from this ability drops off with distance, players need to move as far away from each zone as possible.

As long as everyone moves from the zones, the raid should not need to use any healing cooldowns to survive the damage.

G'huunExplosive CorruptionCorrupting BiteWave of Corruption

The group should deal with these in an identical fashion to how they dealt with them during phase two.

The Explosive Corruption will only target one person during phase three.

Blood FeastPutrid BloodWave of Corruption

This acts as a pseudo enrage, as the raid must defeat the boss before the incoming damage gets too high.

After the Collapse ability has ended, the group should stack up and remain stacked up as much as possible to allow healers to efficiently out-heal this damage.

Do Note: Just like phase two, this strategy does not work on heroic mode! Please check the heroic section of this guide for more information.

G'huunGaze of G'huun

At 100% energy and after a short cast, all players facing the boss will be feared for 6 seconds.

The entire raid must turn away from the boss before this cast completes, as to ensure they maintain their stacked formation throughout this phase.

Raid Finder DifficultyExplosive CorruptionVirulent Corruption

Although this doesn't change the strategy players should use for this ability, it does make it less likely that a player will be hit by a Virulent Corruption orb, as there are fewer of them.

Dark YoungDark Bargain

This does allow players to gain as many stacks of Dark Bargain as they like, however they should be cautious as several damage taken increase stacks may lead to a quick death.

Blood FeastPutrid Blood

The increase in range makes it more likely that more players will have their Putrid Blood stacks removed.

Heroic DifficultyG'huunVirulent CorruptionExplosive CorruptionExplosive Corruption

The raid must exercise extreme caution throughout the fight and make sure they dodge all Virulent Corruption orbs as to minimise the number of Explosive Corruption debuffs the raid needs to deal with.

Just like normal mode, the healers need to ensure any player travelling to the Upper Platforms should be topped up as to easily survive the damage sources in the area.

Blightspreader Tendril

This immobile add needs to be tanked and will frequently cast Decaying Eruption which deals a large burst of plague damage to all players.

The group must interrupt this cast as the highest priority.

The tank alongside one other 14 second interrupt should rotate their kicks to sufficiently cover each cast.

Blightspreader Tendril

Upon reaching 0% energy, it will cast Burrow and teleport to another area of the Arena Floor.

The group should aim to kill this add before it has the chance to cast Burrow.

If Burrow does occur, the two players assigned to interrupt it should run over to it to maintain their interrupt rotation, whilst the raid quickly finishes it off.

Dark Bargain

Any player who accidentally gets mind controlled should be killed as soon as possible as to prevent them from creating chaos amongst the raid.

Example of raid positioning that will minimise splash damage during phase two.

Wave of CorruptionPutrid Blood

This forces the raid to be spread 5 yards throughout the phase, only stacking after a set of two Wave of Corruption casts have been completed, as the Blood Feast is due to be cast.

As soon as the Blood Feast has expired, the raid must spread immediately as the new Wave of Corruption casts are due to come in.

Any additional stacks of Putrid Blood can be devastating, not only as it will force more output from the healers, but it will grant additional Blood Might stacks to the Gibbering Horror upon removal.

Putrid BloodBlood Feast

This minor change forces players to stack slightly closer than before... but otherwise doesn't change the strategy.

Wave of Corruption

This makes healing the phase substantially more difficult, as area of effect healing abilities will hit less players.

Healers should rotate healing cooldowns towards the later stages of the phase to help combat the high damage coming from the Putrid Blood stacks.

G'huunMalignant Growth

This will cover 3 large areas of the encounter space in red growths. The growths will swell over 8 seconds and then explode, dealing near lethal damage to anyone within 8 yards.

4 seconds after the first three large areas are coated in Malignant Growths, the remaining encounter space will also be coated in growths.

Players should stand within these second areas as to dodge the first wave of exploding growths.

After the first set has exploded, the raid must move into the newly safe areas as to dodge the second wave of exploding growths.

Example of movement required to deal with the Malignant Growth ability.

G'huunMalignant GrowthWave of Corruption

This is most easily achieved by tanking G'huun in the middle of the encounter area whilst the raid spreads evenly across the space, whilst remaining within healing range.

Healers should attempt to stand close to the centre of the encounter space as to maintain healing range on as many players as possible.

Mythic DifficultyG'huunMythic G'huun Strategy GuideAbout the Author@FatbossTVDiscord.gg/fatbosstvRaid Guides for All Specs

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Comments

Comment by mati865

Anybody know the addon saying: "Don't get two stacks!" around 4:30?

Comment by mariof

May I add one thing. P3 on G'huun will start at 20% according to dungeon journal. I think it was changed recently.

Comment by Ahdee

The guide said that Explosive Corruption will only be cast on non-tanks. But why did the tanks in my guild had them?

Comment by Zerdepperer

Explosive Corruption is applied to tanks aswell (which is pretty stupid)

Comment by eel21

On normal after first Reorigination Blast no more Power Matrices were spawning so it seems you get on Blast for P1 and one for P2.

Comment by 1807671

Hard boss as of now...
We killed him on normal last night....
We saved our damage cool downs till stun phase when boss takes 100% extra damage and bursted hard on it then...

It was 20% then we survived collapse used defs and killed him with 5 people alive...

In the end it's husk was ours...

Comment by targetman

Anyone know if warlocks with absolute corruption can use their dot to prevent blighted ground?

Comment by salemjs

Is it better to bloodlust during the 2nd Reorigination Blast (since G'huun is stunned and takes double damage for 24 sec) or after Phase Three to finish him off before raid dies?

Comment by Kayyyle

Can you throw the orb from a distance into the driver ?

Comment by deynao

https://www.youtube.com/watch?v=RubXDO7TYVs - first G'huun kill in the World

Comment by hetfield2107

Could use a little help understanding something. These raid mechanics are pretty off-putting to me, but I'm trying. I'm a 120 frost mage and was threatened to be kicked because I 'hero'd' out-of-order twice. I know people are in the heat of the moment but I would like to know what that means as I'm not trying to blow anything. I accidentally clicked my time warp once during phase two but was trying to kill the adds whenever they spawned and only went after the main boss when I saw others doing it. This kind of makes me want to throw my hands up. Any advice for a noob?

Comment by jackblues

Soloing in mythic mode with a 608 Arms warrior. Pretty slow with the power matrix phase but you can do it alone.

G'huun Uldir Raid Strategy Guide

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