Abilities:

• Arcane Storm - Deals 15K arcane damage per second to all enemies within 50,000 yards for 6 seconds
• Release Abberations - Releases 3 Abberations to attack all enemies

Red Vial

• Consuming Flames - Ignites random target, dealing 9K fire damage per second, additional magic damage taken by the target increases this effect by 25% of damage taken, lasts 10 seconds
• Scorching Blast - Deals 750K fire damage, split among all targets in frontal cone within 60 yards of caster

Blue Vial

• Biting Chill - Surrounds random target in frost doing 7.5K frost damage per second to target and all allies within 8 yards for 10 seconds
• Flash Freeze - Causes area around random target to freeze dealing 50K frost damage to all targets within 10 yards and encases them in a block of ice for 30 seconds.   When ice is broken, deals additional 50K frost damage to all targets within 10 yards, but also breaking all ice in that area too

Green Vial

• Remedy - Heals caster for 150K hp and 2K mana per second, heal effect increases by 150K per second for 10 seconds.   Magic dispellable.
• Debilitating Slime - Slime sprays from cauldron coating every unit (allies and enemies) in the room, which increases all damage taken by 100% and suppresses any Growth Catalysts on target, lasts 15 seconds.

20% HP

• Release All - Releases remaining Abberations, and in addtion 2 Prime Subjects
• Magma Jets - Stream of small fire fissures towards random enemy doing 25K fire damage to all in the path, in addition to 5K fire damage to all that stand in them
• Absolute Zero - Summons sphere near random target that if it comes within 6 yards of an enemy, explodes for 20K frost damage to all within 6 yards knocking them back.
• Acid Nova - Deals 5K nature damage per second to all enemies for 10 seconds

Abberations

• Growth Catalyst - Increases nearby allies damage dealt by 20% and reduces damage taken by 20%, 10 yard range

Prime Subjects

• Growth Catalyst - Same as above
• Fixate - Fixed on a target, immune to taunt, lasts 10 seconds

Notes:

• Main mechanic is that every 40 seconds, he throws vials in his cauldron and gives him certain abilities depending on which color
• Pattern will be either Red or Blue, then the other one, then followed last by Green
• Arcane Storm is raid damage that can be interrupted
• Red Vial - means everyone stack up in front, it's a Brutallus Meteor Slash thing
• Blue Vial - Spread out, one person will be targetted and ice blocks allies all around him, kill a block to release everyone, 5K hp, make it a ranged.  Heal up person in it before breaking.
• Green Vial - Dispel his heal, and temporarily negates Growth Catalyst and debuff on everyone that increases damage taken by 100%, group the adds to aoe them down asap.
• Summons Abberations in packs of 3, twice in each Blue/Red phase, interruptable cast
• There are 18 Abberations and 2 Prime Subjects to be summoned, and will release all that's left at 20%
• Due to Growth Catalyst, adds must generally be offtanked away from the boss
• There will only be time for 2 Green Vials, so you want to have 9 abberations taken care of each time (3 of 4 casts)
• Can kite some around and maybe have the main tank take some to make it managable, or have a 2nd OT
• Maybe single target a few of them down cause 9 adds on 1 OT probably means splat
• Some people opt for complete zerg, meaning interrupt all add summons, zerg kill boss when they're all released at 20%
• 20% HP - Goes into everyone must avoid standing in/near stuff mode.   Idealy you released/killed all abberations before and only Prime Subjects are left.    Burn boss ASAP.
• 6 minute enrage.