Carapace of N'Zoth
This is a three phase encounter where you will be fighting the Fury of N'Zoth however in each Phase of the encounter you will be dealing primarily with the other elements of the encounter.
You will have a Sanity bar when starting this encounter which will be drained from a variety of mechanics during the encounter, however you are able to re-fill the sanity bar with the support of Wrathion who will be standing at the start of the encounter area for each Phase.
Anchor of Sanity - Wrathion will have a field around him which will restore Sanity to any players stood within it. You will also receive a movement speed buff whilst in this zone called Grace of the Black Prince which lasts for 10 seconds. The rooms for each phase are quite large so it is advised where possible to have a Warlock gateway set up between Wrathion and the centre of the room.
Ashjra'kamas, Shroud of Resolve - You will have an extra action button to use your cloak. This is on a 2 minute cooldown and will transport you to Wrathion. It will also heal you for 100%.
Adaptive Membrane - One of the mobs in the encounter will receive this shield for 12 seconds which will place an absorb on the mob and prevent them from being Crowed Controlled or slowed below 100% movement speed. If the shield is broken before the duration of it expires the damage taken will be dealt to the target, and a Fragment of Sanity will spawn.
[Heroic] The target of the Adaptive Membrane will also be immune to interrupts.
Phase 1 (100% - 50%)
There are two tentacles in this phase which the raid must deal with as the highest priority. When these are killed Fury of N'Zoth will take damage.
Growth-Covered Tentacle - This will slam down from one side of the room to the other, you will see a large shadow appear on the floor on the location that it will slam towards. If you are hit by the Tentacle you will take a lethal amount of Nature damage.
The raid will need to be spread on either side of the tentacle to kill the Horrific Hemorrhages. If any Horrific Hemorrhages remain after 1 minute, they will deal very large amounts of Shadow damage to the raid for each one alive.
Maddening Eruption - This drains 5 Sanity from all players and deals a moderate amount of Shadow damage.
Interconnectedness - When the Gaze of Madness has been killed the boss will lose 3% Health.
Phase 2 (X% - 40%)
Important: Ensure you are on as much Sanity as possible when finishing this phase, as in Phase 3 you will no longer have Wrathion's Aid.
You will not be able to attack the Fury of N'Zoth in this phase until you have destroyed all of the Synthesis Growths on the sides of the room. Whilst the Synthesis Growths are alive the Fury of N'Zoth will heal any missing health.
These are placed on both sides of the room on the ramps and at the top of the room, they will all be casting Synthesis which grants the boss immunity to damage, immunity to healing reduction effects, and heals him.
Regenerative Mass - The Mycelial Cysts will regenerate 1% health every 0.5 seconds.
Fury of N'Zoth
Mycelial Infusion - If the boss is stood within the Mycelial Growth he will gain 100% increased damage.
Eternal Darkness - This will deal a moderate amount of Shadow damage and drain 5 Sanity from all players in the raid. It will also cover your screen in a completely horrible graphic of the Eye of N'Zoth for half a second.
Phase 3 (40% - 0%)
During this phase you will no longer have the help of Wrathion.
Thrashing Tentacle - Three tentacles will spawn around the edge of the room and slam towards the centre of the room, you will see a large shadow appear on the floor on the location that it will slam towards. If you are caught within these you will take lethal amounts of Nature damage.
Please note: No testing has been conducted on this boss for Mythic.
Adaptive Membrane - This can now be placed on players, which will make it more problematic to remove the absorb shield. When the absorb has been removed both a Fragment of Sanity and a Shard of Sanity will spawn.
Fragment of Sanity - This now restores 5 Sanity to a player (down from 10).
Shard of Sanity - This restores 10 Sanity to all players within 20 yards.
You will no longer have the help of Wrathion for both Phase 2 and Phase 3.
Regenerative Expulsion - This will heal the Cyst by 100% and deal heavy Shadow damage to all players within 15 yards.
When you kill a Synthesis Growth, 2 Nightmare Antigen adds will spawn.
When you kill all Synthesis Growths Phase 3 will begin.
Mycelial Cysts are present in this area of the encounter
Tank Damage Profile
All Phases - Swap at 2 stacks of Black Scar (Please note: on Normal/Heroic you will need to swap at 3 stacks in Phase 1)
Phase 1 - Position the boss near the tentacles when they spawn
Phase 1 - When the Growth-Covered Tentacle slams down be prepared to pick up adds from the red puddles on the ground
Phase 3 - Be prepared to pick up adds after every Insanity Bomb
Phase 3 - Keep the boss out of the shadows of the Thrashing Tentacles
Black Ox Statue can be useful to group the adds together in Phase 1 and 3
Provoke is useful on this encounter to move the boss towards adds faster for more optimal cleave
Vengeance Demon Hunter
Sigil of Chains can be useful to group the adds together in Phase 1 and 3
Avoid casting Avenger's Shield on the Gaze of Madness, as each interrupt drains Sanity from the raid.
Mandible Slam is blockable
Mandible Slam is blockable
Shockwave can be useful to stun the adds that spawn in Phase 1 and 3 once they are grouped together to prevent them from attacking the raid
Stampeding Roar is very helpful on this encounter as the rooms are large and there is a lot of movement between Phases
Ursol's Vortex can be useful to group the adds together in Phase 1 and 3
Blood Death Knight
Gorefiend's Grasp can be useful to group the adds together in Phase 1 and 3