PHASE 1 STRATEGY
First, split the raid into 2 even groups.
You will want one group to focus on soaking the Reactive Toxin that is close to the edge of the platform, and the other group to focus on soaking the Reactive Toxin that is closer to the middle of the room. This way it will be easier for everyone to remember where they should go to soak.
You will also need to assign 6 players to pop the blobs, 2 per Reactive Toxin cast, preferably ranged to maximise damage output. The same player cannot pop the Reactive Toxin blob multiple times.
Positioning:
You want to start the fight closer to the edge of the platform, and shortly after you will get the first Liquefy cast on the tank; which will cover a large portion of the area under the boss in a green puddle. You should then move the boss clockwise and you get the first Reactive Toxin cast.
Place the 2 Reactive Toxin blobs in roughly the spots marked in the image above and both groups should instantly run there to soak.
Everyone in the group should be hugging the edge of the circle, towards the boss and the designated blob poppers should walk into the blob just as the Venom Nova cast is about to finish.
Immediately after being knocked into the air, as you are falling down, two players will have a large circle that deals damage to anyone caught within it; this doesn’t leave a puddle on the ground, so the players should just quickly move away from everyone, it doesn’t matter where.
You will also have to dodge large green waves that will come out of the Reactive Toxin spots.
If you did everything correctly, you should now have the entire section between Purple and Blue marker covered in green puddles.
Now, move the boss into the middle of the section between Blue and Orange marker before the second Liquefy cast.
This way you will now cover most of that section in green puddles, and then you want to move the boss towards the edge of the Orange marker section.
Here we will want to drop our first Silken Tomb (roots), because they also leave a puddle underneath.
To do this, you will need to cuddle up towards the section of the room that you just came from.
Players that can remove the root themselves should prioritise the far spots, while others should get as close as possible towards the boss, so that the roots can be cleaved down.
You then get a Web Blades cast that simply needs to be dodged and the phase repeats itself from here.
The movement and positioning will always be the same and very logical because you will always tend to place stuff close to a puddle to save space, then move the boss once the section becomes full.
You will do this until you do 3x Reactive Toxin, afterwards the intermission will start.
Note: The 3rd Reactive Toxin overlaps with Web Blades, so it is recommended to place both Reactive Toxin circles towards the edge of the platform because Web Blades is always targeted towards players, so your standard spot would be filled with lines in that case, and there is usually nobody standing at the edge of the platform.
INTERMISSION STRATEGY
The boss will move to the middle of the room, and gain a massive shield that needs to be nuked down in order to cancel the intermission.
You want your entire raid to play in the same section, because healing is very demanding and you will want to be in range of all healers/group heals.
Every player is latched onto the boss via web lines and will inflict damage to anyone getting touched by the small circle, so you will want to be loosely stacked together without overlapping the circles too much.
Every few seconds, the boss will cast Wrest, which pulls every player towards the boss. Players standing too close will get devoured (die).
You only need to be in the safe spot just before the cast finishes, there is no followup apart from the very low strength pull the boss constantly does to latched players.
Classes that can interrupt the grip can stand anywhere if they are confident in their skills. Things like Double Jump, Hover, Disengage, Blink etc will work.
There will also be very large blobs that you simply need to dodge.
Once the Shield is destroyed, you will have to kill 2 adds on opposite sides of the room by splitting the raid into two groups.
It recommended that you use the same groups that you assigned to soak Reactive Toxin in Phase 1, this way you don’t have to create multiple groups.
The 2 adds are both Ascendant Voidspeaker and the first thing you need to do is to interrupt Shadowblast, because this can easily kill a player.
While the add is up, random players will spawn Gloom Orbs that split apart into multiple orbs that shoot out, these need to be dodged.
When the Add is dead, it will spawn an orb that knocks everyone in the direction they are facing after a short delay; you want to position yourself at the edge of the platform, aiming at the mini platform in front of you and phase 2 will begin.
PHASE 2 STRATEGY
Both groups will have identical adds to kill. However, only one group at a time will get a Wrest cast (the grip from the intermission).
1st Mini Platform (1x Chamber Guardian + Chamber Expeller)
Both adds will be stacked once you arrive, but shortly after, the Chamber Expellerwill jump away and target a random player with a laser that needs to be dodged.
The group that gets the first Wrest grip cannot stack up the adds until the grip is finished, while the other group can instantly move the Chamber Guardian on top of Chamber Expeller.
There will also be several puddles to dodge, but that’s it for mechanics on this platform.
Once both adds are dead, click the crystals and you will get a bridge spawn.
2nd Mini Platform (Little spiders + Devoted Worshipper)
The tank should pick up a bunch of Little Spiders (or crabs) on the bridge and move them all on top of the Devoted Worshipper.
The Devoted Worshipper has an ability that needs to be dispelled called Gloom Touch; this simply inflicts damage to all players in the area when dispelled or expired. So you will want to dispel one by one to stagger the damage and prevent several Gloom Touches from expiring at the same time, which will most likely kill everyone. The debuff expires after 12 seconds.
You want to kill the Devoted Worshipper before the Cosmic Apocalypse cast is finished. Once all adds are dead, you will be able to click the crystals again for a new bridge.
This platform also has a Wrest ability, so make sure you are standing safe if your group is targeted by it.
3rd Mini Platform (Little spiders + Ascendant Worshiper)
This is the easiest platform because you are fighting against the spiders and the same add that you had before when you needed to get the knock-back towards your platform. So you will have to Interrupt Shadowblast and dodge Gloom Orbs.
You don’t have to deal with Wrest on this platform; because the boss is casting Acidic Apocalypse, which wipes the raid if the cast finishes before both groups get knocked back towards the boss.
Make sure you are standing at the edge, facing the boss when waiting for the knockback that happens after the add has been defeated.
PHASE 3 STRATEGY
Queen Ansurek won’t do anything for a while, until the Aphotic Communion cast is finished. So until that happens, you can just blast.
Afterwards, she jumps towards a purple circle marked area; make sure to dodge that.
The first ability you have to deal with is Infest; the current target tank will get infested, and will need to move out with a large circle to spawn little spiderlings and also avoid hitting anybody with it.
At the same time the other tank needs to taunt the boss and take the Gorge hit.
All Ranged players should be standing at the edge of the platform, this is because the Gorge hit causes Queen Ansurek to expel several swirlies towards ranged players that all leave behind a puddle.
Players should be ready to instantly apply crowd control effects on the spiderlings as they move very fast and even 1 spiderling reaching the boss may lead to a wipe. Hunter traps are amazing here. Spiderlings also drop puddles when they die.
Just as you killed the spiderlings, you will get Royal Condemnation cast on 2 random players.
These two players get a large web circle that actually does not clip players, so it doesn’t matter if it’s on top of anyone, but they do distance based damage to the entire raid. Because of this, you want to go in front of the boss and place those 2 abilities relatively close, this way you can have Queen Ansurek and the 2 Web anchors (Royal Shackles) stacked up for better cleave.
This is also a very natural movement, as the area behind you will be filled with puddles from spiderlings and Gorge swirls.
Note: no player is allowed to touch the web anchor, otherwise they get cocooned and need to be broken out.
You will now get your first Abyssal Infusion, this mechanic creates 2 Portals that you need to use in order to skip the Frothing Gluttony (waves).
2 players will get targeted by this; you want to place one close to the middle of the room and the other one opposite to it, on the outside of the platform. You should try to put them as close as possible to the edge as it gives you more time to react to the wave this way.
Melee should prioritise the middle spot to drop the portal, while ranged should take the outside (far) one. If 2 melees or 2 ranged get it, you have to figure it out on the fly.
Make sure you are not touching the circle as the portal is being placed, since it deals damage. There will also be orbs shooting out of the portals when they initially spawn, dodge them.
Waves are cast pretty much instantly after you dodged the orbs. So, just get close to the middle portal and fight against the slight pull that Queen Ansurek does on everyone to avoid accidentally taking the portal. You should just play it safe and stay a few yards away from it, there is really no need to risk taking it too early as you have plenty of time to take the portal before it’s too late.
The Wave comes from the outside, moving towards the boss, so once the wave passes the outer portal, it is safe to take the middle portal.
After exiting the portal, every player will be affected by Abyssal Reverberation, which is a small circle around the player that forces everyone to spread as fast as possible.
The portals will then explode, leave a puddle and shoot out several orbs that need to be dodged.
The next two major abilities that happen are Infest and Royal Condemnationbut you deal with them exactly like you did the first time.
Royal Condemnation targets should always go in front of the boss, while the infested Tank should always go to the back to spawn the adds.
Ranged should always be somewhere behind the boss in order to spawn the puddles that happen after Gorge hits, which always instantly happen after the Infest cast.
The final ability in this phase is the Summoned Acolyte adds.
3 will spawn at the same time, with a shield, while casting Null Detonation. You are not able to interrupt Null Detonation before you nuke down the shield, but once you do, make sure that no more casts go through.
When you kill those 3 adds, you will need 3 players to pick up the Acolyte’s Essence that is dropped to the ground. The Essence and the Adds cannot be touched by the wave that comes shortly after, because it triggers a wipe mechanic if they do. So, the players who are picking up the essence need to make sure to do the portals correctly, because you will still wipe if the player holding the essences gets touched by a wave.
From here the fight repeats with all abilities that you’ve done so far; and in case you get 4 sets of Portals this will also trigger an enrage.