Boss 3 of Siege of Orgrimmar will be Norushen. Norushen is a 7-min enrage fight wqith various mechanics that can trip us up. OUr job is to defeat the Amalgam of Corruption by purifying ourselves of Corruption.

At the beginning of the fight, each raider will begin with 75 corruption that appears as an energy bar. Each stack lowers your damage done to the Amalgam. Stacks consist of 25 corruption.

Amalgam Abilities:

1. Blind Hatred: Similar to Durumu, a beam will be cast and rotate either clockwise or counter clockwise. Standing or getting hit by the beam cause 400k damage per second. 
2. Purifying Light: Incorporating the new "Proving Grounds", a ball of yellow light will appear somewhere aorund the room. Dependant on your role in raid, a specific "test" will be engaged requiring you to complete a personal challenge to cleanse your corruption.

• Test of Reliance (Healers): Healers are tasked with killing a Greater Corruption on their own. If the Corruption is not killed it will respawn into the unphased room. Pit ofDespair is cast while phased that will cause damage every second. Lingering Corruption 10 second debuff that will cause 280k shadow damage if not dispelled.
• Test of Confidence (Tanks): Tanks have a simple task, survive. Tanks will encounter Titanic Corruptions that they will need to stay alive against for one(1) minute.  Titanic Corruptions cast Titanic Smash, which is a 400k frontal punch with a 2 second cast time. Each Melee hit from the Titanic Corruption will cause a stacking 10k per second damage debuff. Hurl Corruption is a 2second shadow bolt cast that does 220k-280k damage. it cannot be avoided. Cooldowns will need to be timed to absorbed and avoid burst damage from their final 2 abilities Burst of Corruption (150-175k aoe Shadow nova) and Piercing Corruption (A 320k piercing strike that bypasses any absorption effects, but can be avoided or blocked)
• Test of Serenity (DPS): DPS have the easiest of all, but yet the hardest. Once phased, random ads will spawn that will need to be dps'd down and killed in the phase world. Each time an add dies, it respawns in the normal room. There are 4 small adds and one large one. DPS will have to coordinate killing the small ones first in order for the up top DPS to sufficiently kill the small adds before the big add gets popped up. Upon dying in the real world, each add drops a pool of corruption that will cause anyone who touches it to take 90k damage per second and add 25 stacks of corruption each tick. However players will have to run in and "Collect" the corruption to remove it from the floor.

There are 2 spawn areas for Purifying light, both to the right and left of the entry way. PLayers will have to have a coordinated schedule allowing certain players to cleanse early on so that they can pick up corruption at a later time in the fight.

At 50%, the Amalgam becomes Frayed, causing an Unreleased Manifestation of Corruption.  These adds are similar to the energy balls on Elegon. They traval towards the Amalgam. Should they reach him, the Amalgam gains 5% damage for 15 seconds, and it stacks. Anew add is spawned every 10% of Health the Amalgam loses.
The Amalgam also begins to cast Icy Fear at 50%. This debuff starts out by causing 75k damage to everyone in raid every 3 seconds. As the Amalgam's health goes down the debuff strengthens it's damage per 3 seconds.
Coordination of add spawns from DPS and dps'ing down the Manifestations will be key to success.