Lords of Dread
The Dread Lords have worked for eons to bring Zovaal's plan to completion. Now, on the brink of their master's victory, they only need to complete one final task to ensure none are left to resist the new order.
During this encounter you will be fighting against both Dreadlords at the same time. They will slowly fill the encounter area with Slumber Clouds and when they reach 100 Energy each Dreadlord use their ultimate ability.
Mal'Ganis will use Unto Darkness which will turn both Dreadlords into swarms of insects which will deal large amounts of raid damage, however both bosses will take 100% more damage from the raid.
Kin'tessa will use Infiltration of Dread which will make the entire raid hostile to each other and both bosses will hide inside players. Identify the players who have the dreadlords hidden in them and kill them to end the phase. Most people will see the same two players as the ones with the bosses hidden in them, however the players with the bosses will see different people in an attempt to throw you off. Follow the majority instead of the vocal few.
When either boss dies their corpse will deal increasing amounts of raid damage until the other boss dies with Rampaging Swarm. Kill both bosses at a similar time.
Two Slumber Cloud spawn in the room after each 100 Enery Ability and on the pull at player locations. If a player touches a cloud they will be put to sleep for 8 seconds.
Cloud of Carrion is applied to players as the fight goes on. This will deal increasing damage per tick. This can be passed to another player by them having them run into the Green Circle around the player with the Cloud of Carrion.
Fearful Trepidation - Two players will have this applied to them and anyone within these when it expires will be feared.
This will cause small swarms to project from the player based on the direction they are facing. If any player makes contact with these they will receive the Cloud of Carrion debuff so it is important that no player is hit by these.
Ideally your raid should have a Death Knight player Death Grip this add onto the bosses when it reaches full Health.
Your role as a tank on this encounter is to move the bosses away from Slumber Clouds and keep them faced away from any other player (including your co-tank).
Kin'tessa will attack the tank and all targets in front of her with Anguishing Strike and apply a stacking Shadow DoT.
100 Energy Abilities
Unto Darkness - When Mal'Ganis reaches 100 Energy both bosses will deal high amounts of raid damage for 20 seconds and take 100% more damage.
Any spec with a 2 minute AoE damage cooldown should save them for this phase for additional damage.
Infiltration of Dread - When Kintessa reaches 100 Energy the raid will become hostile to each other and both dreadlords will be hiding on players in the raid. Some of your raid are able to see the Dreadlords above players. Call out who you can see and once you have reached a consensus as a raid, kill those players to end the phase.
Two players will see different players from everyone else, these are the ones you have to kill! Once you kill them, they get an immunity aura preventing them from actually dying. Tanks are never chosen.
If you accidentally kill a wrong player, they are just dead.
Tank Damage Profile
Mal'Ganis & Kin'tessa Swing Timers: 1.5s (Curse of Weakness 1.8s)
Vengeance Demon Hunter
Blessing of Spellwarding can be placed on a player with Cloud of Carrion during Unto Darkness to keep them healthy.
Blood Death Knight
Anti-Magic Shell to mitigate damage from Kin'tessa's slash
Necrolord Death Knights should save Abomination Limb for the swarm in Unto Darkness as it will deal increased damage during this phase. Additionally, the phases are just over 2 minutes apart so you will have it available for each one.