Start of the dungeon

216336 will jump to random people with 434083, but the 214840 will randomly poison your party. Dispell on CD and use caut as an emergency if people get too many stacks. This poison is the threatening thing for us in this entire section. The only mini-boss that does AoE is 218324 (the one by where the boss spawns). The cast to watch for is 438877 which does heavy group damage. Use zephyr and/or pre-cast into this AoE.

213179

Boss abilities are just a combination of the 3 mini bosses. So, have something ready for every 438476 cast. Additionally, he will cast 438473 which will leave puddles on the ground which you need to move constantly for as well as heal. For this, you can outheal with a lifebind combo using chronof (pre-cast hover). You should not need anything else for this, this is the less threatening of the 2 AoE casts the boss does. Otherwise, help kill the adds because your burst damage is exceptional for it.

215405 trash

228015 will do 1241693 periodically until they die which does very heavy group-wide damage. The 223253 448248 cast can probably be handled by you because it is very infrequent. Let your group kick the other casts. Coordinate stops/stuns with your group to handle the 216340 since letting it complete the cast probably means your group dies (it will pull that entire side).

Special tech: You can rescue from the bridge to the boss room and skip the final 228015 (G70 in Mythic Dungeon Tools) before the boss. Coordinate with your group and rescue your tank over. Once the boss is pulled, your group will be teleported in the arena.

215405

Not drastically much to say, but three notable:

Infestation targets people that leaves a heavy DoT. You should easily have an external for every one (2 Time Dial and Rescue).
If you get targeted by Burrow Charge, you can Warp at the last second while moving to avoid the damage.
Do not touch Tornadoes left by Infestation or be outside the arena in the intermission or you will die.

Final trash pulls

For some reason, these 216365 absolutely SLAM tanks so just be ready to baby them. Dispel 1241785 from your tank on CD at >5 stacks. Since this debuff is a slow, rescue will also clear this now (yay buffs).

231649

Actually nerfed from season one, so this boss is pretty easy. If your group has poison dispels of any kind, advise them to self-clear. Otherwise, just be mindful when you dispel them. Tag the 216337 throughout the fight with as in order to drop the pools to stand in for 432117. Break your root after with tswipe, quell, wbuffet, or rescue (yes, it works on roots too now).