This dungeon comprises four boss fights:

• Watcher Irideus – Tasked by Keeper Tyr to protect and maintain the Halls of Infusion, Watcher Irideus has performed his duties to perfection... until now. Caught off guard by the Primalists' incursion, he was overwhelmed by the elemental forces they unleashed. A mistake he does not intend to make again.

• Gulping Goliath – Deep within the caverns of the Halls of Infusion lurks the Gulping Goliath. Sire to countless generations of hornswogs, the Goliath and his brood have thrived upon the unprocessed waters of the wellspring. Driven by an insatiable hunger, he will eagerly devour any creature that strays too close to his lair.

• Khajin the Unyielding – Khajin the Unyeilding seethes with hatred for Keeper Tyr for tampering with the ancient wellspring beneath Tyrhold. Waters that once flowed with the eternal essence of Azeroth have been polluted by Order magic. Khajin would see the world freed from the malignant legacy of the titans... at any cost.

• Primal Tsunami – Infuser Sariya is driven to restore the world to what it once was: a primal elemental landscape of unfettered power. She has used all her will and cunning to summon the the Primal Tsunami, an elemental being mighty enough to topple Keeper Tyr's facility and return the waters of the wellspring to their natural state.

Halls of Infusion is located in Thaldraszus at /way 59.24 60.64.   More information can be found on WowHead here.

Watcher Irideus

All Roles

• Watch out for the  Spark Volley ground puddles, if you do get hit by one it will leave a magical debuff that damages you over time.

• During Stage Two of the fight, the boss will cast  Ablative Barrier, kill 3 Nullification Devices on top of the boss so they can remove its  Ablative Barrier applications with the  Nullifying Pulse cast. Just remember, the longer the boss stays in  Ablative Barrier, the more stacks of  Siphon Power he gets.

• Interrupt the  Purifying Blast cast from Nullification Device.

• On Mythic difficulty, each time you remove an application of the  Ablative Barrier, the boss will trigger a  Reactive Spark, dodge the ground puddles at all costs!

Tank

• Aim the  Titanic Fist frontal away from your party.

• During Stage Two of the fight, collect the threat from the nearby Nullification Devices and stack them under the Watcher Irideus so you can destroy its  Ablative Barrier.

Healer

• Prepare to use healing cooldowns once Watcher Irideus is casting  Static Surge.

• The boss will periodically apply 3  Power Overload magic debuffs to your team members. Dispel as many as you can and spot-heal the rest of your teammates with the debuff. As soon as the debuff runs out, it will trigger a follow-up spell -  Power Field.

Gulping Goliath

All Roles

• Sidestep the  Cave In ground animation.

• Quickly nuke the Curious Swoglets, they will leave a stackable Poison effect on you -  Gulp Swog Toxin that will kill you upon reaching 10 stacks.

• Once the boss casts  Gulp, select one player from your party to be deliberately "consumed" to prevent him from getting  Hangry Enrage Effect, in case you get it, you can always Enrage Dispel. On Mythic Difficulty you can't Enrage Dispel the  Hangry effect anymore, unlike Normal and Heroic! Keep in mind once you get  Gulp you will take initial damage and get 3 applications of  Gulp Swog Toxin!

• Sidestep the  Belly Slam ground animation at all costs.

Tank

• Move Gulping Goliath closer to the Curious Swoglets to enable your DPS to cleave all targets simultaneously.

Healer

• Top up your teammates quickly once Gulping Goliath is casting  Overpowering Croak.

• Spot heal the target that gets [spell=385551, here is a good place to use your external-defensive (like Restoration Druid's  Ironbark cooldowns!

• Use healing cooldowns once the boss is casting  Toxic Effluvia, the AoE damage will become especially dangerous if the boss is enhanced by the  Hangry effect.

Khajin the Unyeilding

All Roles

• Once the Khajin the Unyielding begins to cast  Hailstorm, hide behind any nearby  Ice Boulder or use immunity to survive.
  One important note is that once you used the  Ice Boulder they will become damaged and completely destroyed with the next  Hailstorm], triggering  Avalanche, so always make sure to find a new boulder to hide after each  Hailstorm. You can still damage through the  Ice Boulder.

• Avoid being hit by the  Glacial Surgerings at all costs.

• On Mythic difficulty, Khajin the Unyielding will gain an additional spell called  Frost Cyclone, make sure to avoid it and not "bait" it towards any existing  Ice Boulder since it will damage them.

Tank

• Bring the boss closer to any existing  Ice Boulder to increase the uptime damage on your melee DPS, when they exit melee to hide during  Hailstorm cast.

Healer

• Throughout the whole fight, players will have  Polar Winds debuff on them, don't forget to top them up frequently!

• Top up the health of the party members that get targeted by the  Frost Shock, and dispel the follow-up slow effect.

Primal Tsunami

Primal Tsunami boss encounter has two stages: Stage One: Violent Swells and Stage Two: Infused Waters. During Stage One, you will be fighting on the main platform (from where you pull the boss) until the boss reaches 100 energy, once he does that, it will cast  Cast Away and begin its Stage Two. During this stage, you will be sent back to the beginning of the bridge (where you've entered originally), and your goal is to make your way back to the boss. Keep in mind, your team will be split in two (3 players in one corridor and 2 players in the other) and the  Crashing Tsunami will be present once again! Here is a more detailed breakdown of the fight:

All Roles

• Avoid being hit by the  Infused Globules ground spheres, during Stage One and Stage Two, failing to do so will deal high initial damage and trigger a secondary effect -  Waterlogged.

• During Stage Two, avoid the incoming  Crashing Tsunami while you are making your way back to the boss. You will have to deal with 2 Primalist Infuser, defeating them will put an end the Stage Two. Upon this, the sequence of the spells and stages will repeat until the boss is dead.

• Speaking about Primalist Infuser, it is important to interrupt the  Infuse ability, since it empowers the boss. In addition, watch out for the  Inundate cast!

• On Mythic difficulty, the boss will cast an additional ability -  Rogue Waves, dodge the incoming waves!

Tank

• Be present in melee at all times to prevent the boss from dealing mass AoE damage to the entire party.

• Use active mitigation once the boss is casting  Squall Buffet. Not only will it knock you back, but it will also apply a follow-up effect -  Focused Deluge. Your goal is to get as quick as you can in melee to prevent him from casting Undertow (dealing mass AoE damage to the entire party).

Healer

• Periodically, Primal Tsunami will cast  Tempest's Fury, dealing AoE damage to all players. Be ready to top up the health of your teammates!

• Dispel the slow effect from  Waterlogged as quickly as you can.