Halls of Infusion Mythic+ Dungeon Guide

Tanks face the boss away from the group and step out of the Titanic Fist frontal.

Avoid the 4yd swirlies spawned by Spark Volley underneath each player every 2s for 10s.

Use defensives and healing CDs to survive the Static Surge pulsing damage.

Power Overload targets 2 random players, leaving behind a Power Field zone on expiration or removal for 15s, which now grows to its maximum size. I recommend bouncing back and forth between 2 sides of the room as puddles will clear before the next cast of this ability, then using one of the two main strategies:

1) Have debuffed players move towards the outside of the room to drop their puddles, reducing movement required by the rest of your group.2) Debuffed players stay stacked with the group, then everyone moves together when the debuff expires, reducing movement required by the debuffed players.

Both strategies work well, just note that you will not want to dispel the debuff off either player when doing the 2nd strategy, unless you have something like Mass Dispel, imp dispel, or dwarf racial which allows you to dispel both debuffs simultaneously.

At 15% health the boss will transition to his intermission, going immune and spawning 4 Nullification Devices that tanks should pick up. Whenever possible use CC’s on these mobs to stop their Purifying Blast cast, and if any go through use a magic dispel to remove the DoT. On death these mobs will do a 12yd AoE explosion, which you’ll need to hit the boss with 3 times in order to break his shield and go back to the boss phase. Don’t worry if you miss the boss as he will spawn a second wave of adds if the first dies without his shield breaking.

While the shield persists in this phase, the boss gains stacks of Siphon Power, increasing his nature damage done and the size of the Power Fields for the duration of the fight, so be aware that in the second boss phase you’ll be taking more damage and will need to run further to get out of the puddles.

Use defensives and healing CDs on the Overpower Croak pulsing damage, and avoid the swirlies spawned by each tick. These swirlies turn into 2 Curious Swoglet mobs, which you’ll want to hit with the Gulp AoE the boss does around itself as it will instantly kill them. The first Gulp cast of the fight happens very quickly so you don’t need to move much, you can just use stuns and slows to lockdown the Swoglets inside the AoE. For every other Gulp cast in the fight there is a significant delay after the add spawns before it happens, so I recommend tanking on one side of the circle, then running to the opposite side after the Swoglets spawn, using any slows you have on them in the process, then when the Gulp AoE appears use stuns/knockbacks to keep them inside the circle.

Tanks will also want to make sure they stand in every Gulp circle, otherwise he will gain a 50% physical damage increase for 1 minute.

Belly Slam targets a random player, avoid the circle and try not to be too far from the group.

Toxic Effluvia deals moderate nature damage every to the party, this can be scary if you have a Swoglet hitting you at the same time, so use a defensive if that happens.

Healers be aware of the constant ticking damage from Polar Winds throughout the fight.

Throughout the arena you’ll see 2 kinds of Ice Boulders, Solid ones (blue with a white outline) and Cracked ones (fully white). These are important for the Hailstorm cast, which deals lethal damage to anyone not hiding behind a Boulder, however it is important to hide specifically behind a Solid boulder as this cast will cause Cracked boulders to shatter, dealing massive frost damage to anyone within 12yds of it. This cast also causes Solid boulders to become Cracked, so you can’t hide behind the same boulder for back to back casts.

New boulders are spawned shortly after each Hailstorm cast via Glacial Surge, just be sure to avoid the rings of frost this ability also spawns.

Frost Cyclone is a line attack towards a random player, avoid this hit and try not to point it towards any nearby boulders, as it will also damage them just like Hailstorm.

Tanks be aware of the instant cast frost hit and slow from Frost Shock. This is cast at predictable times so make sure you have a defensive running.

Healers make sure the party is topped for the Tempest’s Fury AoE hit, use defensives here if you aren’t or on higher tyrannical keys.

Infused Globules spawn both near player locations and randomly through the room, avoid their random patrol and 10yd explosion after 11s. Avoiding these can be a bit easier if your group stays together to bait some of the initial spawns in one area, then moves to a clear part of the room.

Tanks be aware this boss is stationary, so leaving melee can cause other players to be attacked or the Undertow ability to be used. There’s also a tank combo in Squall Buffet and Focused Deluge, where the former deals a single large frost hit and knocks you back, and the latter deals ticking damage every second for 5 seconds. Make sure to taunt the boss just as Squall Buffet finishes casting, as if you don’t the boss will sometimes hit other melee players because you’ve been knocked out of range.

At 60% health the boss will use Cast Away, forcing the group to run through a gauntlet of Crashing Tsunamis to run back to the boss arena. Once you arrive you’ll need to interrupt Primal Infusers to stop the Infuse damage increase they channel into the boss, then use CCs to stop their Inundate casts. Once all 4 of these mobs are dead the boss will reform and repeats the boss phase above until defeated.