For character biography, see Cho'gall.
{{#set:NPC faction=Combat}}
Race race::Ogre mage (Humanoid)
Level NPC level::?? Boss
Health 35,000,000
Location Bastion of Twilight
See Pilt:Icon-3D-48x48.png

Cho'gall is the last boss encounter of Bastion of Twilight, an entry-level raid in World of Warcraft: Cataclysm.


Many abilities in the encounter will cause the Corrupted Blood effect (no relation to the more famous disease of the same name).

  • 32px  [Corrupted Blood]ω ϖ—Your blood is corrupted! Increases damage taken from Corruption of the Old God by 2%. Stacks to 100.
  • 32px  [Corruption: Accelerated]ω ϖ—Your Corrupted Blood has gone to your heart and it is accelerating! You are becoming more corrupt by the second! Causes two stacks of Corrupted Blood per second for one minute. Gained at 25% corruption. Magic dispellable.
  • 32px  [Corruption: Sickness]ω ϖ—At 50% your Corrupted Blood has made you sick, causing you to vomit and inflict 39000 to 41000 Shadow damage to friends in a 5 yard cone in front of you, also causing Corrupted Blood.
  • 32px  [Corruption: Malformation]ω ϖ—At 75% Corrupted Blood you are afflicted with Corruption: Malformation. A Malformation has grown out of your back which will cast Shadow Bolts at nearby friendly players.
  • 32px  [Corruption: Absolute]ω ϖ—At 100% Corruption your Corrupted Blood has corrupted you absolutely, transforming you into a Faceless one. You receive 100% less from healing but inflict 100% additional damage and spells are cast instantly.

Corruption causes and amounts:

  • Dark Sickness - 5
  • Accelerated Corruption - 2 per second
  • Sprayed Corruption - 5 per 2 seconds.
  • Spilled Blood of the Old God - +5 per second of standing in it.
  • Congealed Blood of the Old God melee - 10 per hit.
  • Corrupting Crash - 10
  • Depravity - 10
  • Debilitating Beam - 2 per second.
  • Corruption of the Old God - 1 per tick.

Phase One - 100% to 25%

  • 32px  [Conversion]ω ϖ—Cho'gall beckons to the weak of mind causing the target to channel the Worshipping spell on him. Worshipping Cho'gall causes him to gain Twisted Devotion every 3 sec. Worshipping can be interrupted.
  • 32px  [Twisted Devotion]ω ϖ—The Worshipping has caused Cho'gall to become more zealous, increasing damage done by 10% for 20 sec.
  • 32px  [Flame's Orders]ω ϖ—Cho'gall Orders the Flame to come to his aid. Adds 20,000 fire damage to each melee swing and spawns Fire patches.
  • 32px  [Shadow's Orders]ω ϖ—Cho'gall Orders the Shadow to come to his aid. Adds a shadow damage AoE that hits everyone in the room to Cho'gall's melee attacks.
  • 32px  [Fury of Cho'gall]ω ϖ—Cho'gall blasts the target, inflicting 30,000 Shadow and 30,000 Physical damage and increasing damage taken by Physical and Shadow by 20% each. Cast on primary aggro target. Lasts 45 seconds.
  • 32px  [Summon Corrupting Adherent]ω ϖ—Cho'gall summons Corrupted Adherents with 1.7 million HP (10-man)/4.98 million HP (25-man) from the nearby portals to aid him. Corrupting Adherents have Corrupting Crash, Sprayed Corruption and Depravity. Corrupting Adherents leave a black pool on the ground when they die that causes Corruption when standing in it.
  • 32px  [Fester Blood]ω ϖ—Festers the blood of any Corrupting Adherents, causing Blood of the Old God to form from congealed blood and boils the blood of living Corrupting Adherents. This will spawn five Congealed Blood of the Old God with 75,000/300,000 HP each from each dead Corrupting Adherent. Congealed Blood of the Old God are untankable and cause Corruption when they melee swing, they can be snared and rooted. Living Corrupting Adherents will gain a raid wiping shadow AoE if they are not killed before this is cast (approxiamtely 30 seconds).

Corrupting Adherents These are Faceless Ones with the following abilities:

  • 32px  [Depravity]ω ϖ—Inflicts 21937 to 23062 Shadow damage to enemies within 50,000 yards and causes Corruption. Interruptable. 1.5 second cast
  • 32px  [Corrupting Crash]ω ϖ—Fires a shadow missile at a target, dealing 43875 to 46125 Shadow damage to all enemies near the impact. Targets hit by the Corrupting Crash have corruption applied to them.
  • 32px  [Spilled Blood of the Old God]ω ϖ—The slain Adherent to the old god spills its corrupted blood. Inflicts 14625 to 15375 Shadow damage to enemies within 0 yards and applies Corrupted Blood.
  • If Corrupting Adherents are not killed in time they will gain
  • 32px  [Festering Blood]ω ϖ—The Festered Blood is causing the Corrupting Adherent to bleed out and spray Corruption everywhere.
  • 32px  [Sprayed Corruption]ω ϖ—Inflicts 34125 to 35875 Shadow damage to everyone and applies Corrupted Blood every 2 seconds.

Phase Two - 25% to 0%

  • 32px  [Fury of Cho'gall]ω ϖ—Cho'gall blasts the target, inflicting 30,000 Shadow and 30,000 Physical damage and increasing damage taken by Physical and Shadow by 20% each. Cast on primary aggro target. Lasts 45 seconds.
  • 32px  [Corruption of the Old God]ω ϖ—Cho'gall becomes completely corrupted by the Old Gods, inflicting 4875 to 5125 Shadow damage every 2 sec to everyone in the room.
  • 32px  [Darkened Creations]ω ϖ—Cho'gall summons 4 (10) 10(25) Darkened Creations with 166,000 HP (both 10/25-man) to aid him! Darkened Creations are tentacles that have Debilitating Beam.
  • 32px  [Debilitating Beam]ω ϖ—Reduces healing and damage done by 75%. Inflicts 4875 to 5125 Shadow damage every 1 sec. Causes Corrupted Blood every 1 sec. Lasts 10 seconds. Undispellable.


'whole fight mechanics':

  • 5 yard check recommended
  • need magic dispellers for accelerated corruption
  • need 2 tanks that switches aggro every 45 seconds

Phase 1: Cho'gall switches between flame's orders and shadow's orders. In Flames orders he strikes with an additional 20K fire damage and spawns lava spots on the ground that you must look out for and get out of them. In shadow's orders he strikes with an additional 20K shadow damage and does a raidwide shadow damage (minor damage). He also forces a player to worship him which can and must be interrupted as it adds an unnecessary negative aspect to the fight. His next main ability in phase 1 is that he summons 'corrupting adherents' through portals that have spawned. These do a lot of corrupting blood to your raid in different ways so they must be burned down quickly. However as they leek aoe corruption and spawn adds that are untankable; it is best to kill all adherents in the same area (prefferably a corner so it does not interfere with general raid movements. When he summons blood of the old gods from the corpses of the adherents, they need to be AoEd down before they start their own nasty ability (after 30 seconds since spawning). Continue with these things in mind and you will be up to phase 2.

Phase 2: This is a dps race whereas phase 1 was all about control. Save cooldowns for this phase which activates at 25% and below. He will deal damage to the whole raid and generate corruption on the whole raid. He will also spawn tentacles that need to be killed ASAP.


A () denotes Gall speaking, while regular text is Cho speaking.

  • Enough! (To His will all flesh succumbs, from His kingdom chaos comes!) Yes... what he said.
  • Give me your strength!
  • Behold the might of the Hammer!
  • Everyone succumbs in the end!
Summon Corrupting Adherent
  • Behold the destiny of your fragile world!
  • (Come brothers! Feast on hope!)
  • More, more! (More! They need more!)
Corruption of the Old God
  • Brother... it cannot be... (Destiny has come!) My strength... (Too proud! He speaks in blood! Listen!) My mind... (It is for His glory we serve!) What... is happening...? (Gone is the dawn. Come shades of twilight! Come madness! Come Havoc! Come infinite night!)
Darkened Creations
  • (The claws of fate grasp the unbelievers!!)
  • What madness have we wrought... (Not yet enough!)
  • I can't take much more... (Brother, it merely begins!!)
  • (The master SEES!! The master SEES!!!)
  • (The master's eye sees all that was and all to be, or not!)

Killing a player
  • Cho'gall cackles maniacally.
  • (NOW they see the darkness! Their eyes are open!!)
  • Now the master has them!
  • (Chaos! Madness! Like a hug for your brain!!)
Raid wipes
  • It is finished. (The fate of all!)
  • Brother... we are shattered... (But the master... I still hear... so angry... Master...)


Normal Mode

Heroic Mode


10-man HeroicEdit

10-man NormalEdit

25-man NormalEdit

25-man HeroicEdit

Patch changes Edit

External linksEdit