Loot The loot from the encounter can be found in the , which spawns after Algalon's defeat. Overview Despite its straight-forwardness, Algalon the Observer is likely the hardest fight in Ulduar, and maybe ingame. He has two Phases, which don't differ too much - Phase 1 until his health hits 20%, and Phase 2 until the end of the encounter. During Phase 1, Algalon will hit your tank quickly and hard. Quantum Strikes account for a lot of the damage, and Phase Punches will force tank rotation every ~45 seconds - your non-debuffed tank will want to taunt Algalon soon after the 4th Phase Punch. Cosmic Smashes can target any raid member - they are preceded by a shadow-fissure looking swirling red circle on the ground. A few seconds after the circle appears, a meteor will fall on its location, inflicting colossal amount of fire damage, with additional splash damage to the entire raid. The splash portion of the damage is based on proximity, so getting far away from the point of impact will mitigate it. Cosmic Smashes have their own raid warning. There are two kinds of adds spawned during this encounter - Collapsing Stars and Living Constellations. The Collapsing Stars lose 1% health every second and should have a dedicated DPS bringing them down prematurely, as they die in a violent explosion that hits the entire raid for quite a bit. They spawn Black Holes on the location where they died. Raid warning will announce the appearance of a Star. Living Constellations spawn in threes, and wander around, following normal threat table. They attack with Arcane damage, which although not negligible, can be healed through. If a Living Constellation "walks" into a Black Hole spawned by a Collapsing Star, both despawn, so having a healer or an Off-tank pull aggro on them and leash them would be a good idea. Big Bang is the other huge spell in the fight. Every ~90 seconds Algalon will begin an 8-second Big Bang cast, similar to Hodir's Flash Freeze. All players, except the tank, will need to run to a Black Hole and stay inside until the spell goes off. While inside, raid members will take ~2,000 arcane damage every 1 second and will be attacked by Dark Matters. A tank will need to stay out and use a damage reduction cooldown (or have one given to them from another raid member) to eat the spell. If the entire raid enters a Black Hole, Algalon will go Berserk. Try not to enter the Black Holes too early (but certainly not too late!), and avoid the Dark Matters. After the spell goes off, all players phased in Black Holes will be automatically returned to the normal dimension. Big Bang also has a raid warning. When Algalon's health reaches 20%, he will enter Phase 2. No more Collapsing Stars or Living Constellations will spawn, but he will continue casting Big Bang - you want to time this phase very soon after a Big Bang, as avoiding those and surviving will be tricky. In place of those, four Black Holes will appear and they will periodically spawn Dark Matters. From this point on, the fight becomes a DPS race, as Algalon will continue Phase Punching your tanks, and you might get overwhelmed by adds or too much tank damage. Abilities - Inflicts 15,675 to 17,325 (25 Player: 34,125 to 35,875) Physical damage. - Inflicts 8,788 to 10,212 an applies a stacking debuff on the target. When the debuff reaches 5 stacks the target is affected by Phase Punch. - Shifts the target to another plane for 10 seconds. - Inflicts 41,438 to 43,562 (25 Player: 53,625 to 56,375) Fire damage to anyone under the area of impact, and less Fire damage to everyone, based on proximity. - Inflicts 76,313 to 88,687 (25 Player: 107,250 to 112,750) Physical damage to anyone not standing inside a Black Hole. Removes players from Black Holes. - Inflicts 655,500 to 724,500 damage to all enemies. Cast 6 minutes after engaging him. Equivalent to Berserk. - Summoned periodically during Phase 1. They lose 1% health each second and cast Black Hole Explosion as they die, which inflicts 16,088 to 16,912 (25 Player: 20,475 to 21,525) Shadow damage to the entire raid. They leave Black Hole on the ground as they die. - Spawned by dying Collapsing Star. Players standing in a Black Hole are shifted to Worm Hole dimension, taking 1,532 to 1,968 Arcane damage every 1 second spent shifted. Dark Matters populate the Worm Hole. If a Living Constellation enters a Black Hole, both despawn. - Spawned in threes periodically during Phase 1. Attack with Arcane Barrage, which inflicts 4,163 to 4,837 Arcane damage. If a Living Constellation enters a Black Hole, both despawn. - Spawned inside Worm Hole dimension during Phase 1. Attack any raid member who enters a Black Hole. Spawned periodically from Black Holes during Phase 2.