Algalon the Observer is the Hard-Mode only boss of Ulduar has still not been defeated! The biggest problem with this boss is the time you have to train on him, you are only allowed to fight him one hour each week! After that, Algalon the Observer will despawn and you will have to wait for the next week before you can try to kill this big ass boss again.

Algalon the Observer Abilities

Cosmic Smash: Calls an abyssal boulder from the sky, dealing 35613 to 41387 Fire damage.

Black Hole Explosion: 15675 to 17325 Shadow damage inflicted to enemies. Instant

Quantum Strike: Strikes at an enemy, inflicting 15675 to 17325 Physical damage. 5 yd range

Phase Punch: Massive blow that inflicts 8788 to 10212 damage and slowly fades the target to another plane of existence. 5 yd range

Big Bang: Inflicts 107250 to 112750 Physical damage to nearby enemies. 8 sec cast, 3 sec cooldown

Algalon the Observer Loot

Daggers Phys.DPS One-Hand Fang of Oblivion
Staves Phys.DPS Two-Hand Dreambinder
Crossbows Phys.DPS Ranged Skyforge Crossbow
Daggers Spell Hit Main Hand Starshard Edge
1H Maces Spell MP5 Main Hand Constellus
Plate Tank Legs Legplates of the Endless Void

Good luck killing this pain in the ass end game boss within Ulduar at Wrath of the Lich King