Flesh giant

Algalon the Observer
Race	Unknown (Elemental)
Level	?? Boss
Location	The Celestial Planetarium
Status	Defeatable
Ulduar The Siege of Ulduar Flame Leviathan Ignis the Furnace Master Razorscale XT-002 Deconstructor (lore) (lore) (lore) (lore) The Antechamber of Ulduar Assembly of Iron Kologarn Auriaya (lore) (lore) (lore) The Keepers of Ulduar Mimiron Freya Thorim Hodir (lore) (lore) (lore) (lore) The Descent into Madness General Vezax Yogg-Saron (lore) (lore) The Celestial Planetarium Algalon the Observer (summoned) (lore) Other Ulduar instances Halls of Stone (5) Halls of Lightning (5)

Algalon the Observer is a hard mode-only encounter in Ulduar, released in patch 3.1.

Background

Algalon was sent by the titans after Watcher Loken's death activated a planetary fail-safe protection, indicating possible distress on Azeroth. Algalon's task is to analyze any systemic corruption on the planet. If it's deemed beyond saving, the Titans will "re-originate" the planet to cleanse it of corruption, killing all currently living organisms in the process. After his defeat in Ulduar, he chose to monitor the activities of the mortal races of Azeroth. His outlook on life and the Titans' plans has been called into question, so he seeks to understand what makes Azeroth so different from the countless worlds he has observed before.

Gaining entry to the Celestial Planetarium

Algalon the Observer in-game.

Algalon can only be accessed if at least one member of a raid has obtained the  [Celestial Planetarium Key] or  [Heroic Celestial Planetarium Key]. Players have a one-hour window to defeat him per lockout period, starting upon first initiation of the encounter. Blizzard has sardonically referred to him as "Algalon the Raid Destroyer".

1. Completing  I Choose You, Steelbreaker or  I Choose You, Runemaster Molgeim enables one [Archivum Data Disc] to drop. (It is not party loot.)
2. The quest from the disc directs the player to the Archivum, located beyond the Assembly of Iron.
3. After listening to the Archivum Console speak,   Prospector Loren offers  [80R] The Celestial Planetarium, asking the player to locate the Celestial Planetarium and return to Prospector Loren. Completing this enables four quests to obtain the Watchers' sigils, which may be performed in any order:
   •  [80R] Freya's Sigil - Complete  Knock, Knock, Knock on Wood.
   •  [80R] Hodir's Sigil - Complete  I Could Say That This Cache Was Rare.
   •  [80R] Mimiron's Sigil - Complete  Firefighter.
   •  [80R] Thorim's Sigil - Complete  Lose Your Illusion.
4. Completing all four quests enables the quest  [80R] Algalon. Returning to the Archivum Console rewards [Celestial Planetarium Key].

Abilities

25-man

Algalon dual wields and his swing speed is extremely fast, with ~27,000 main hand and ~15,000 offhand swings coming every second or less.

The Collapsing Stars have 1,764,000 life in 25-man.

• Cosmic Smash – Calls 3 abyssal boulders from the sky that each deals 53,625 to 56,375 Fire damage.
• Black Hole Explosion – Instantly casts 20,475 to 21,525 Shadow damage to enemies.
• Quantum Strike – Strikes 34,125 to 35,875 Physical damage within a 5-yard radius.
• Phase Punch – Massive blow that inflicts 8,788 to 10,212 damage within a 5-yard radius, and slowly fades the target to another plane of existence.
• Big Bang – Inflicts 107,250 to 112,750 Physical damage to nearby enemies. 8-second cast with a 3-second cooldown.
• Berserk - Algalon the Observer enrages after 6 minutes.
• Ascend to the Heavens – Is a 2-second cast that inflicts 655,500 to 724,500 Arcane damage to enemies.

10-man

Algalon dual wields and his swing speed is extremely fast, with ~18,000 main hand and ~10,000 offhand swings coming every second or less.

• Cosmic Smash – Calls an abyssal boulder from the sky that deals 41,438 to 43,562 Fire damage.
• Black Hole Explosion – Instantly casts 16,088 to 16,912 Shadow damage to enemies.
• Quantum Strike – Strikes at an enemy, inflicting 15,675 to 17,325 Physical damage within a 5-yard radius.
• Phase Punch – Massive blow that inflicts 8,788 to 10,212 damage within a 5-yard radius, and slowly fades the target to another plane of existence.
• Big Bang – Inflicts 76,313 to 88,687 Physical damage to nearby enemies. 8-second cast with a 3-second cooldown.
• Berserk - Algalon the Observer enrages after 6 minutes.
• Ascend to the Heavens – Is a 2-second cast that inflicts 655,500 to 724,500 Arcane damage to enemies.

Strategy

Phase 1

Algalon transforms the arena into space and immediately begins attacking the player with the highest threat. Algalon hits very hard and fast; he casts Quantum Strike on the tank with high frequency, so healers must ensure that the tank remains at full health at all times. All DPS merely attack the boss the best they can. Algalon can be positioned anywhere, as he has no frontal cleave or cone attacks.

After 15 seconds, Algalon begins casting Phase Punch on the current tank every 15 seconds and also summons four Collapsing Stars. Once the tank gets 5 stacks of the Phase Punch debuff, that tank is ported out for 10 seconds as if he stepped into a Black Hole, whereupon the debuff is completely removed. Algalon then switches to the second highest on his threat table. Your off-tank should be ready to taunt, with healers ready to change targets, as the off-tank begins taking substantial damage very quickly. Algalon will be Phase Punching the tanks throughout the fight; tanks must keep switching after.

Assign one or two ranged DPS to kill the Collapsing Stars one at a time. Since they slowly lose health on their own (1% health per second), if left alone, they will all explode at the same time and wipe the raid. Alert the healers so they are ready before a Collapsing Star is killed, as the entire raid takes roughly 16,000 shadow damage regardless of positioning (a tank who is too low on health when a star explodes can die and likely cause a wipe). When a star dies, it leaves behind a Black Hole, which is both a void zone and a portal to another realm. Collapsing Stars keep spawning throughout the fight until Phase 2 and should always be killed.

Every 25 seconds, Algalon casts Cosmic Smash on a random player, including a tank. This appears as a red fissure, which explodes after a few seconds. Everyone—not just the targeted player—should move away from the red fissure, as it causes splash Fire damage, based on player distance with the impact point.

Note: On 25-man, Algalon casts three separate Cosmic Smashes on three random players.

Fifty seconds after the initial pull, Algalon summons three Living Constellations that cast Arcane Barrage on random players and have normal threat tables. It is unnecessary to DPS a Living Constellation. Instead, a single player can aggro these and run behind any available Black Hole, as any Living Constellation that passes through a Black Hole dies instantly, causing that Black Hole to disappear. The player assigned to do this should be careful to run around a Black Hole instead of through it to avoid being portaled. Death Knights are an ideal choice for this, as they can stand behind Black Holes and use Death Grip to pull the Constellations into the hole.

Every 90 seconds from the initial pull, Algalon begins casting an 8-second lethal spell called Big Bang. To avoid getting hit by Big Bang, everyone must enter a Black Hole created by a killed Collapsing Star except for one person. For this reason, all players should be aware of the location of remaining Black Holes after Living Constellations are killed. Players need not enter the same Black Hole as everyone else; all Black Holes lead to the same dark realm. Once inside the Black Hole, players take roughly 1,500 Shadow damage per second and must avoid elite adds called Dark Matter scattered throughout the realm until Algalon finishes casting Big Bang, and automatically portals everyone back to the normal realm.

If everyone enters the Black Holes and Algalon has no player in the normal realm to target, he kills the raid with Ascend to the Heavens, then disappears. For this reason, one player must remain in the normal realm to eat the Big Bang. A player protected with a Holy Priest's [Guardian Spirit], a Shadow Priest casting [Dispersion], a Fire Mage with 2 ranks in [Cauterize], or a tank blowing all cooldowns are all capable of eating the Big Bang. Note: Big Bang ignores immunity effects such as Hand of Protection, Ice Block, and Divine Shield.

Entering a Black Hole also resets all threat of the player. If the currently Phase Punched tank stays outside to eat the Big Bang, the off-tank can taunt to gain all the threat he had upon return to the normal realm, ensuring that the rest of the raid doesn't pull aggro.

This phase continues until Algalon reaches 20%.

Phase 2

When Algalon reaches 20%, Collapsing Stars and Living Constellations despawn and stop respawning, and all open Black Holes disappear. Algalon continues to cast Quantum Strike, Phase Punch, Cosmic Smash, and Big Bang.

Algalon then summons four new Black Holes in a square pattern. Every 30 seconds, four Unleashed Dark Matters will spawn, one from each Black Hole. The off-tank needs to pick these up and tank them to the side for the rest of the fight, and DPS must burn down Algalon before these adds pile up and become too much to handle.

When this phase begins, consider swapping tanks, as the current tank will very likely have the Phase Punch debuff and the off-tank will have a hard time surviving if he has to tank the adds and Algalon together. If you swap once the Black Holes spawn, you'll be given about 45 seconds to defeat Algalon before a forced tank-swap which should be long enough. Players also need to keep alert about Cosmic Smashes as Algalon will still be using this.

Once Algalon reaches 1-2%, he is defeated, all adds and Black Holes despawn.

Quotes

Intro

• Trans-location complete. Commencing planetary analysis of Azeroth.
• Stand back, mortals. I am not here to fight you.
• It is in the universe's best interest to re-originate this planet should my analysis find systemic corruption. Do not interfere.

Engaged for the first time

• See your world through my eyes: A universe so vast as to be immeasurable - incomprehensible even to your greatest minds.

Aggro

• Your actions are illogical. All possible results for this encounter have been calculated. The Pantheon will receive the Observer's message regardless of outcome.

Summoning Collapsing Stars

• The stars come to my aid.

Big Bang

• Witness the fury of cosmos!
• Behold the tools of creation!

Phase 2

• Beware!

Killing a player

• Loss of life, unavoidable.
• I do what I must.

Berserk

• You are... out of time.

Despawn

• Analysis complete. There is partial corruption in the planet's life-support systems as well as complete corruption in most of the planet's defense mechanisms.
• Begin uplink: Reply Code: 'Omega'. Planetary re-origination requested.
• Farewell, mortals. Your bravery is admirable, for such flawed creatures.

Defeated

• I have seen worlds bathed in the Makers' flames. Their denizens fading without so much as a whimper. Entire planetary systems born and raised in the time that it takes your mortal hearts to beat once. Yet all throughout, my own heart, devoid of emotion... of empathy. I... have... felt... NOTHING! A million, million lives wasted. Had they all held within them your tenacity? Had they all loved life as you do?
• Perhaps it is your imperfection that which grants you free will. That allows you to persevere against cosmically calculated odds. You prevailed where the Titans' own perfect creations have failed.
• I've rearranged the reply code. Your planet will be spared. I cannot be certain of my own calculations anymore.
• I lack the strength to transmit the signal. You must hurry. Find a place of power close to the skies.
• Do not worry about my fate <name>. If the signal is not transmitted in time re-origination will proceed regardless. Save. Your. World.

Sound Files

See Sound Files of Ulduar: Algalon the Observer

Drops

Main article: Gift of the Observer

Band of Lights Item Level 35Disenchants into: Not disenchantable Binds when picked up Unique-Equipped Finger +2 Agility +3 Stamina +2 Critical Strike +2 Haste   Prismatic Socket Socket Bonus: +2 Agility   Requires Level 30 Sell Price: 7 56 23 Boundless Gaze Item Level 35Disenchants into: Not disenchantable Binds when picked up Mail Head 8 Armor +2 Agility or Intellect +6 Stamina +2 Critical Strike +2 Haste   Meta Socket Prismatic Socket Socket Bonus: +4 Agility   Durability 100 / 100 Requires Level 30 Sell Price: 10 84 35 Breastplate of the Timeless Item Level 35Disenchants into: Not disenchantable Binds when picked up Plate Chest 16 Armor +3 Strength or Intellect +5 Stamina +5 Parry +3 Critical Strike   Prismatic Socket Prismatic Socket Socket Bonus: +5 Stamina   Durability 165 / 165 Requires Level 30 Sell Price: 15 82 45 Bulwark of Algalon Item Level 35Disenchants into: Not disenchantable Binds when picked up Shield Off Hand 47 Armor +2 Strength +6 Intellect +3 Stamina +2 Dodge +1 Parry   Prismatic Socket Socket Bonus: +4 Dodge   Durability 120 / 120 Requires Level 30 Sell Price: 15 25 99 Comet's Trail Item Level 35Disenchants into: Not disenchantable Binds when picked up Unique Trinket +4 Agility or Strength Equip: Your melee and ranged attacks have a chance to increase your haste rating by 726 for 10 sec. Requires Level 30 Sell Price: 11 39 40 Constellus Item Level 35Disenchants into: Not disenchantable Binds when picked up Mace One-Hand Speed 2.60 2 – 3 Damage (1 damage per second) +11 Intellect +3 Stamina +1 Critical Strike +2 Versatility   Prismatic Socket Socket Bonus: +3 Spell Power   Durability 110 / 110 Requires Level 30 Sell Price: 19 8 93 Cosmos Item Level 239Disenchants into:  [Abyss Crystal]: 1-2 Binds when picked up Held In Off-hand +72 Intellect +101 Stamina +41 Critical Strike Requires Level 80 Sell Price: 7 56 23 Dark Matter Item Level 35Disenchants into: Not disenchantable Binds when picked up Unique Trinket +4 Agility or Strength Equip: Your melee and ranged attacks have a chance to increase your critical strike rating by 612 for 10 sec. Requires Level 30 Sell Price: 11 39 40 Drape of the Messenger Item Level 35Disenchants into: Not disenchantable Binds when picked up Back 3 Armor +2 Intellect +2 Stamina +2 Critical Strike +2 Haste   Prismatic Socket Socket Bonus: +3 Spell Power   Requires Level 30 Sell Price: 11 97 27 Dreambinder Item Level 35Disenchants into: Not disenchantable Binds when picked up Staff Two-Hand Speed 3.60 8 – 12 Damage (2.8 damage per second) +3 Agility +5 Stamina +4 Critical Strike +4 Haste   Prismatic Socket Prismatic Socket Socket Bonus: +6 Agility   Durability 120 / 120 Requires Level 30 Sell Price: 30 44 2 Fang of Oblivion Item Level 35Disenchants into: Not disenchantable Binds when picked up Unique-Equipped Dagger One-Hand Speed 1.80 2 – 5 Damage (1.9 damage per second) +2 Agility +3 Stamina +1 Critical Strike +1 Haste   Prismatic Socket Socket Bonus: +2 Agility   Durability 80 / 80 Requires Level 30 Sell Price: 23 84 13 Gloves of the Endless Dark Item Level 35Disenchants into: Not disenchantable Binds when picked up Leather Hands 4 Armor +3 Agility or Intellect +3 Stamina +3 Critical Strike +2 Haste   Prismatic Socket Prismatic Socket Socket Bonus: +3 Agility   Durability 55 / 55 Requires Level 30 Sell Price: 8 7 14 Legplates of the Endless Void Item Level 35Disenchants into: Not disenchantable Binds when picked up Plate Legs 14 Armor +4 Strength or Intellect +5 Stamina +4 Dodge +3 Parry   Prismatic Socket Prismatic Socket Prismatic Socket Socket Bonus: +12 Stamina   Durability 120 / 120 Requires Level 30 Sell Price: 15 48 10 Meteorite Crystal Item Level 35Disenchants into: Not disenchantable Binds when picked up Unique Trinket +4 Intellect Use: Each spell cast within 20 seconds will grant a stacking bonus of 120 Spirit. Expires after 20 seconds. Abilities with no mana cost will not trigger this trinket. Requires Level 30 Sell Price: 11 39 40 Nebula Band Item Level 35Disenchants into: Not disenchantable Binds when picked up Unique-Equipped Finger +2 Intellect +3 Stamina +2 Critical Strike +2 Haste   Prismatic Socket Socket Bonus: +4 Critical Strike   Requires Level 30 Sell Price: 7 56 23 Observer's Mantle Item Level 35Disenchants into: Not disenchantable Binds when picked up Mail Shoulder 7 Armor +3 Agility or Intellect +4 Stamina +2 Critical Strike +2 Haste   Prismatic Socket Prismatic Socket Socket Bonus: +6 Critical Strike   Durability 100 / 100 Requires Level 30 Sell Price: 10 40 12 Pendant of the Somber Witness Item Level 35Disenchants into: Not disenchantable Binds when picked up Neck +2 Intellect +3 Stamina +2 Critical Strike +2 Versatility   Prismatic Socket Socket Bonus: +3 Spell Power   Requires Level 30 Sell Price: 7 56 23 Pharos Gloves Item Level 35Disenchants into: Not disenchantable Binds when picked up Cloth Hands 2 Armor +2 Intellect +4 Stamina +3 Critical Strike +3 Haste   Prismatic Socket Prismatic Socket Socket Bonus: +7 Spell Power   Durability 55 / 55 Requires Level 30 Sell Price: 4 85 51 Planewalker Treads Item Level 35Disenchants into: Not disenchantable Binds when picked up Mail Feet 7 Armor +2 Agility or Intellect +4 Stamina +2 Critical Strike +2 Versatility   Prismatic Socket Prismatic Socket Socket Bonus: +4 Spell Power   Durability 80 / 80 Requires Level 30 Sell Price: 9 40 35 Pulsar Gloves Item Level 35Disenchants into: Not disenchantable Binds when picked up Cloth Hands 2 Armor +3 Intellect +4 Stamina +2 Critical Strike +2 Haste   Prismatic Socket Prismatic Socket Socket Bonus: +3 Critical Strike   Durability 55 / 55 Requires Level 30 Sell Price: 8 12 87 Reply-Code Alpha Binds when picked up This Item Begins a Quest Requires Level 30 Sabatons of Lifeless Night Item Level 35Disenchants into: Not disenchantable Binds when picked up Plate Feet 10 Armor +2 Strength or Intellect +4 Stamina +3 Critical Strike +2 Haste   Prismatic Socket Prismatic Socket Socket Bonus: +6 Strength   Durability 75 / 75 Requires Level 30 Sell Price: 12 13 50 Shoulderplates of the Celestial Watch Item Level 35Disenchants into: Not disenchantable Binds when picked up Plate Shoulder 11 Armor +2 Strength or Intellect +4 Stamina +3 Critical Strike +2 Haste   Prismatic Socket Prismatic Socket Socket Bonus: +6 Critical Strike   Durability 100 / 100 Requires Level 30 Sell Price: 11 76 15 Skyforge Crossbow Item Level 35Disenchants into: Not disenchantable Binds when picked up Crossbow Ranged Speed 3.00 6 – 10 Damage (2.7 damage per second) +4 Agility +6 Stamina +4 Critical Strike +3 Haste Durability 90 / 90 Requires Level 30 Sell Price: 18 7 78 Solar Bindings Item Level 35Disenchants into: Not disenchantable Binds when picked up Leather Wrist 4 Armor +2 Agility or Intellect +3 Stamina +2 Critical Strike +2 Haste   Prismatic Socket Socket Bonus: +2 Agility   Durability 55 / 55 Requires Level 30 Sell Price: 8 51 23 Star-Beaded Clutch Item Level 35Disenchants into: Not disenchantable Binds when picked up Leather Waist 4 Armor +2 Agility or Intellect +4 Stamina +3 Haste +2 Versatility   Prismatic Socket Prismatic Socket Socket Bonus: +4 Spell Power   Durability 55 / 55 Requires Level 30 Sell Price: 6 34 Starfall Girdle Item Level 35Disenchants into: Not disenchantable Binds when picked up Plate Waist 9 Armor +2 Strength or Intellect +4 Stamina +2 Critical Strike +3 Haste   Prismatic Socket Prismatic Socket Socket Bonus: +6 Strength   Durability 55 / 55 Requires Level 30 Sell Price: 8 1 48 Starlight Treads Item Level 35Disenchants into: Not disenchantable Binds when picked up Cloth Feet 3 Armor +3 Intellect +4 Stamina +3 Critical Strike +2 Versatility   Prismatic Socket Prismatic Socket Socket Bonus: +3 Versatility   Durability 80 / 80 Requires Level 30 Sell Price: 11 46 27 Starshard Edge Item Level 35Disenchants into: Not disenchantable Binds when picked up Unique-Equipped Dagger One-Hand Speed 1.80 1 – 2 Damage (0.8 damage per second) +11 Intellect +3 Stamina +2 Critical Strike +2 Haste   Prismatic Socket Socket Bonus: +5 Spell Power   Durability 80 / 80 Requires Level 30 Sell Price: 23 23 98 Starwatcher's Binding Item Level 35Disenchants into: Not disenchantable Binds when picked up Cloth Waist 2 Armor +2 Intellect +4 Stamina +2 Critical Strike +3 Versatility   Prismatic Socket Prismatic Socket Socket Bonus: +4 Spell Power   Durability 55 / 55 Requires Level 30 Sell Price: 8 15 10 Strength of the Heavens Item Level 35Disenchants into: Not disenchantable Binds when picked up Neck +2 Strength +3 Stamina +2 Critical Strike +2 Haste   Prismatic Socket Socket Bonus: +4 Hit   Requires Level 30 Sell Price: 7 56 23 Zodiac Leggings Item Level 35Disenchants into: Not disenchantable Binds when picked up Leather Legs 6 Armor +4 Agility or Intellect +5 Stamina +4 Haste +3 Versatility   Prismatic Socket Prismatic Socket Socket Bonus: +3 Versatility   Durability 120 / 120 Requires Level 30 Sell Price: 12 7 12

Related achievements

•  He Feeds On Your Tears (10 player)
•  Observed (10 player)
•  Supermassive (10 player)
•  Herald of the Titans (10 player)
•  He Feeds On Your Tears (25 player)
•  Observed (25 player)
•  Supermassive (25 player)

The following achievement is given to the first raid group on a realm to defeat Algalon in a 25-man raid:

•  Realm First! Celestial Defender

Notes

• Algalon is voiced by Chris Metzen.
• The world first kill was claimed by Ensidia in 10-man version on May 18, 2009.
• The world first 25-man kill was claimed by Ensidia on June 3, 2009.

Namesake

The name Algalon appears to be a combination of Algol, a bright three-star system in the constellation Perseus colloquially known as the "Demon Star", and mentioned in H.P. Lovecraft's Beyond the Wall of Sleep; and Eidolon, which is an Astral Double of a living being.

The name also bears a strong resemblance to Aigaion, a creature from the Greek mythology, said to be allied with the Titans.

Collapsing Stars and Black Hole adds

All stars at the end of their main-sequence life cycles undergo gravitational collapse, where the core is compressed and heats up. If the density of the core exceeds a critical point, the star will eventually collapse to an almost infinitely dense "black hole" and release vast quantities of electromagnetic radiation in the most well known type of supernova. A star with a core that contains more than 3 solar masses may collapse into a black hole.

Patch changes

• Patch 4.0.3a (2010-11-23): Despawn timer removed.
  
• Template:Patched
• Patch 3.1.0 (2009-04-14): Added.
  

External links

• Wowhead
• WoWDB

WoWraid Preview of Algalon (video, abilities, quests, etc.) to prepare your raid for that 1 hour timer.