Ulduar Timewalking: Part #4

After completing the The Keepers of Ulduar in part 3, the door to Yogg-Saron opened and we moved onto the final section.

PART 4 - The Descent into Madness

The Decent into Madness is just two bosses who lurk in the depths of Ulduar.

Boss 12: General Vezax

During this fight General Vazax casts Aura of Despair which prevents most mana regeneration meaning that your mana users, particularly healers, need to be efficient with their mana usage.  All players should also try and avoid damage as much as possible.  Avoid Shadow Crash and if you have Mark of the Faceless then move away from other players.  Searing flames needs to be interrupted with a 3 stage rotation and two players assigned to each interrupt.  Saronite Vapors will spawn and should be killed efficiently as they drop green pools which restore mana but also deal damage if a player stays in to long.  Tanks need to use strong defensive cooldowns against Surge of Darkness.  Avoiding damage is the best way to defeat this boss.

Boss 13: Yogg-Saron

Long ago Yogg-Saron was imprisoned deep within Ulduar to save Azeroth from his destructive power but after years of plotting  he has succeeded in corrupting his guards and now he is breaking free.

To assist with this fight you can ask the four keepers of Ulduar to help you.  Freya, Hodir, Mimiron and Thorim all give buffs to the raid.  Defeating Yogg-Saron without these buffs is hard mode and gives you the chance to drop the mount Mimiron's Head.

This is a three phase fight.  Phase one starts as you enter the Prison of Yogg-Saron to see Sara in the centre of the room.  Gas clouds will spawn and standing in them will trigger a Guardian of Yogg-Saron which needs to be killed near Sara to damage her.  Killing about 6 or 7 of these near her will reduce her health to 1% and start phase 2.
Phase 2 each player has sanity and slowly loses it when they get targeted by the fight mechanics.  If your sanity is reduced to 0 your mind will be permanently under the control of Yogg-Saron.  Kill both Constrictor and Corruptor Tentacles quickly and interrupt the Corruptor Tentacles if possible.  If you get Brain Link stay close to the player you are linked to.  Avoid the Death Rays.  When the portals open nominated players should go inside and kill the illusions as fast as possible to enter the brain room and  then use all cool downs on the brain making sure to leave before the timer runs out. Once the brain is destroyed phase 3 will begin.
Phase 3 all players should attack Yogg-Saron himself.  Turn away from him when Lunatic Gaze is cast.  Damage all Immortal Guardians to keep them at low health.  Everytime Yogg-Saron casts Empowering Shadows the Immortal Guardians will be healed to full HP and must be damaged back down to low health, Tanks should use cool downs when this happens.

Good Luck!.  On completing this raid in Timewalking mode, unfortunately there is no reward apart from the reward of the achievement but no actual achievement.  You do get 500 Timewarped Badges though :)