Algalon's Abilities

Thanks Wraith for the info!

	Ascend to the Heavens Inflicts 655500 to 724500 Arcane damage to enemies.
	Big Bang Inflicts 107250 to 112750 Physical damage to nearby enemies.
	Black Hole Explosion 16088 to 16912 Shadow damage inflicted to enemies.
	Black Hole This object is created by a Black Hole Explosion, it looks like a Void Zone.
	Cosmic Smash Calls an abyssal boulder from the sky, dealing 53625 to 56375 Fire damage.
	Phase Punch Massive blow that inflicts 8788 to 10212 damage and slowly fades the target to another plane of existence for 45 seconds.
	Quantum Strike Strikes at an enemy, inflicting 34125 to 35875 Physical damage.

Encounter details

Optimize your time
Since you only have 1 hour per lockout period, we thought of adding a few time management tips:

• Recovering from a wipe takes 2-2.5 minutes including buffs. You can buff while running to buy some time.
• Fly up from the graveyard, run on mount to the Base Camp teleport, then take the Antechamber teleport. This is the optimal way to run back and it takes about 90 seconds to reach the Celestial Planetarium this way.
• On the 10 man version using Ankh or Soulstones and resurrecting players can be a few seconds faster than everybody running back.

Fight details (massive spoilers)

A more detailed explanation of Algalon's abilities:

• Quantum Strike: this is the main melee ability. Algalon is dual-wielding and has a 1.0 attack speed.
• Phase Punch: this ability has a 15 second cooldown, when it reaches 5 stacks, the tank is phased. The debuff has a 45 second duration, so 2 tanks need to rotate by taunting Algalon when it reaches 2-3 stacks.
• Big Bang: it has an 8 second cast time, cannot be interrupted, everyone except the current tank must run into the Black Holes to survive. Algalon casts this roughly every 75 seconds. When the spell hits the "outside", players are phased out from the Black Holes automatically. The damage Big Bang deals is physical, the current tank, who must stay outside will have to use CD abilities to survive the mitigated damage and the time until the healers return.
• Ascend to the Heavens: this ability is used to wipe the raid if noone is attackable by Algalon, if all players ran into the Black Hole, or if the tank dies to Big Bang while everyone else is inside the Black Hole. Players inside the Black Hole are also affected (fragged) by it.
• Cosmic Smash: it has a 25 second cooldown and a 4 second cast time, during which a red impact zone will appear on the platform somewhere (in 25man 3 impact zones will appear). Damage dealt by Cosmic Smash is proportional to the range the player has from its center, it can be as low as 3K. At very close, in addition to the high damage, it also has a deadly knockback effect that shoots you high into the... cosmos so that fall damage will surely kill you.
• Enrage: Algalon's enrage timer is 6 minutes.

You will see four types of adds through the fight:

• Collapsing Star - These adds spawn in packs of 4 when Algalon yells "The stars come to my aid". They have no threat list, their HP decrease on their own as well as from player damage. When a Collapsing Star dies, a Black Hole Explosion hits the entire raid, so their deaths (and the Cosmic Smashes) must be timed to avoid wiping the raid. When it dies a void zone looking area spawns around the star and inside a portal appears that leads to the Black Hole. The void zone doesn't deal damage, and you don't have to click on the portal to active it, just stand on it.
• Living Constellation - 3 of these adds are summoned after 50 seconds, they have 261K HP on normal mode, they use Arcane Barrage to deal 4.5K damage on average. If they are pulled into Black Holes, they close them. Unlike the Collapsing Stars, they do have threat lists, which must be managed by tanks to protect the healers.
• Dark Matter - They look like Wraiths (just like the ones in Stratholme), they can be found inside the Black Hole and players must evade them while waiting for the Big Bang's cast to finish. All Black Holes lead to the same place so the 9 or 24 players share the same phase.
• Unleashed Dark Matter - at 20% Algalon will yell "Behold the tools of creation" and summon 4 adds and desummon every other mob. It is recommended to just tank them and not kill them. Every 30 seconds after this point snother pack of 4 will appear.

This picture has living constellations, collapsing stars and a black hole portal too.

The fight essentially revolves around surviving the AOE abilities. Each of them has to be timed perfectly for the healers to manage keeping everybody alive. At the same time, the adds need to be managed, so that Living Constellations don't kill healers, and they don't close Black Holes unintenationally, Collapsing Stars don't die "in the way" so that players don't fall into the Black Hole accidentally, but they are also not that far away for everyone to reach within ~8 seconds. If someone accidentally enters the Black Hole, the only way out is when Algalon casts Big Bang and the Wraiths inside will make sure players don't survive inside long.

Random tips

• Algalon admits defeat at 2% health, so you only need to burn 98% of its HP.
• Algalon's model is very "light" as you can see it on the screenshots, so if players have trouble noticing the Cosmic Smash impact zones, they should stand on one side of Algalon instead of behind him.
• Since Algalon hits very very hard, the Scarab Brooch (which has the same effect as the proc on Val'anyr) helps a lot for this fight, though it's not at all required.
• For the same reason, it's very useful for Priests to have the 51 point Holy talent: Guardian Spirit, as well as Glyph of Guardian Spirit in one of their Major Glyph slots

Thanks to Wraith for the exclusive preview

Unlocking Algalon

In order to unlock this boss, you need to obtain the key of the Celestial Planetarium. To start, you need the Archivum Data Disc from the Assembly of Iron (hard mode loot).

• Defeat the Assembly of Iron at hard mode by completing I Choose You, Runemaster Molgeim (Heroic) or I Choose You, Steelbreaker (Heroic) to loot the Archivum Data Disc.

With the Data Disc 1 player can get 4 quests at the Archivum Console in the room behind the Assembly of Iron. One quest for each Sigil of the 4 watchers of Ulduar. The person with the quests can loot the Sigils (as quest items) and combine them to open the door of the Celestial Planetarium.

• Defeat the Freya at hard mode by completing Knock, Knock, Knock on Wood (Heroic) to loot the Freya's Sigil

• Defeat the Hodir at hard mode by completing I Could Say That This Cache Was Rare (Heroic) to loot the Hodir's Sigil.

• Defeat the Thorim at hard mode by completing Lose Your Illusion (Heroic) to loot the Thorim's Sigil.

• Defeat the Mimiron at hard mode by completing Firefighter (Heroic) to loot the Mimiron's Sigil.

Finish the quests and you receive a key in your keybag that can unlock the door to Algalon the Observer.

The official armory displayed the Algalon quest rewards (Normal | Heroic) for 20 minutes before being removed.

More than 1 person can loot the sigils, so even though only 1 player can start the quests every week with the Archivum Data Disc, later all of them may finish at the same time.

25-man drops

Ilvl	Type	Name
239	Dagger	Fang of Oblivion
239	Staff	Dreambinder
239	Crossbow	Skyforge Crossbow
239	MH Mace	Constellus
239	Plate	Legplates of the Endless Void

10-man drops

Ilvl	Type	Name
226	Finger	Band of Lights
226	Trinket	Dark Matter
226	Cloak	Drape of the Messenger
226	Trinket	Meteorite Crystal
226	Finger	Nebula Band
226	Amulets	Pendant of the Somber Witness
226	Plate	Starfall Girdle
226	Amulets	Strength of the Heavens
226	Leather	Zodiac Leggings

 

25-Man

	Realm First! Celestial Defender Participated in the realm first defeat of Algalon the Observer on Heroic Difficulty. Title Reward: The Celestial Defender.
	Heroic: He Feeds On Your Tears Defeat Algalon the Observer without any raid member dying on Heroic Difficulty.
	Heroic: Observed Defeat Algalon the Observer on Heroic Difficulty without any raid member dying to Algalon at any point during that raid lockout period. Title Reward: The Astral Walker.
	Heroic: Supermassive Defeat Algalon the Observer while closing 3 Black Holes within 10 seconds on Heroic Difficulty.

10-Man

	Herald of the Titans Defeat Algalon the Observer on Normal Difficulty without anyone in the raid wearing any equipment with an item level higher than 226. Title Reward: Herald of the Titans.
	He Feeds On Your Tears Defeat Algalon the Observer on Normal Difficulty without any raid member dying to Algalon at any point during that raid lockout period.
	Observed Defeat Algalon the Observer on Normal Difficulty. Title Reward: Starcaller.
	Supermassive Defeat Algalon the Observer while closing 3 Black Holes within 10 seconds on Normal Difficulty.

Algaon 25-man Kill Video by Ensidia



Algalon 10-man Kill Video by Underground Kosmonavts