Assembly of Iron

Assembly of Iron
Race(s)	Iron dwarf, Iron vrykul, Iron giant (Humanoid)
Level	?? Boss
Resource	Mana
Reaction	Alliance Horde
Location	The Assembly of Iron
Status	Killable
Ulduar The Siege of Ulduar Flame Leviathan Ignis the Furnace Master Razorscale XT-002 Deconstructor (lore) (lore) (lore) (lore) The Antechamber of Ulduar Assembly of Iron Kologarn Auriaya (lore) (lore) (lore) The Keepers of Ulduar Mimiron Freya Thorim Hodir (lore) (lore) (lore) (lore) The Descent into Madness General Vezax Yogg-Saron (lore) (lore) The Celestial Planetarium Algalon the Observer (summoned) (lore) Other Ulduar instances Halls of Stone (5) Halls of Lightning (5)

The Assembly of Iron (or the Iron Council) is the fifth boss encounter in Ulduar found in The Assembly of Iron. The encounter consists of Steelbreaker, Runemaster Molgeim, and Stormcaller Brundir. Killing any one of the three will give a soft enrage of +25% damage to the other two and grant them additional abilities (similar to Fathom-Lord Karathress). Killing the second of the trio will grant the last with a final stage apart from their usual abilities which must be dealt with in different tactics.

The hard mode of this fight requires players to kill Steelbreaker last.

Background

Bosstiary

The iron armies are led by three fearsome generals, each representing a different race. These leaders are known as Stormcaller Brundir, Runemaster Molgeim, and Steelbreaker.

Adventure Guide

The iron legions of Loken are commanded by three fearsome generals, each representing a different titan-forged race. Stormcaller Brundir, Runemaster Molgeim, and the giant Steelbreaker fight in the name of the keeper's true master, the malevolent Yogg-Saron.

Overview

Defeating a member of the Assembly of Iron will heal the remaining two to full health and grant them Supercharge, which increases damage and grants access to additional abilities.

Damage Dealers

• Avoid damaging Runemaster Molgeim while he has Shield of Runes.
• Standing in a Rune of Power will increase damage dealt.
• Avoid Stormcaller Brundir to minimize damage taken from Overload and Lightning Tendrils.

Healers

• Avoid Stormcaller Brundir to minimize damage taken from Overload and Lightning Tendrils.

Tanks

• Fusion Punch inflicts heavy Nature damage.

Abilities

• Stormcaller Brundir
  •  Chain Lightning  — Strikes an enemy with a lightning bolt that arcs to another nearby enemy. The spell affects up to 5 targets, causing Nature damage to each.
  •  Overload  — Focuses all the caster's energy into a single ball of lightning. This ball grows for 6 sec until it finally explodes, dealing 20000 Nature damage to all enemies within 20 yards and knocking them down.
  •  Lightning Whirl — Spins around throwing off bolts of lightning at random enemy targets. Each bolt deals 3770 to 4230 Nature damage. Lasts 5 sec. Only available when under the affect of Supercharge.
  •  Lightning Tendrils — At two stacks of Supercharge Tendrils of lightning shoot out of the caster's chest, lifting them into the air. These lightning tendrils deal 3000 Nature damage to all enemies around the caster every second. Only available with 2 stacks of Supercharge.

• Runemaster Molgeim
  •  Shield of Runes  — Covers the caster in magic runes, absorbing up to 20000 damage. If 20000 damage is absorbed, this damage in converted into a powerful burst of energy, increasing the caster's damage by 50% for 15 sec.
  •  Rune of Power — Summons a Rune of Power under a random friendly target. This rune increases damage by 50% of all friendly and enemy targets within 5 yards.
  •  Rune of Death — Summons a Rune of Death at a random enemy target's location. This rune deals 2750 Shadow damage every half-second to anyone within 13 yards of that location. Only available when under the affect of [Supercharge].
  •  Rune of Summoning — Creates a Rune of Summoning near a random enemy. This rune will periodically summon Lightning Elementals, which will rush towards random enemies and explode. Only available with 2 stacks of Supercharge.
  •  Lightning Blast — Unleashes a large blast of lightning, dealing 9425 to 10575 Nature damage to all enemies within 30 yards of the caster but killing the caster in the process. Only available with 2 stacks of Supercharge.

• Steelbreaker
  •  High Voltage — Inflicts 1500 Nature damage every 3 sec to all enemies.
  •  Fusion Punch  — An attack infused with energy that inflicts 18850 to 21150 Nature damage and an additional 15000 Nature damage per second.
  •  Static Disruption — Deals 7000 Nature damage to enemies in an area and increases Nature damage taken by 50% for 20 sec. Only available when under the affect of Supercharge.
  •  Overwhelming Power  — The target becomes overwhelmed with power increasing damage done by 200% and causes a Meltdown after 35 sec. Only available with 2 stacks of Supercharge.
    •  Meltdown — The target melts down killing themselves and dealing 29250 to 30750 Nature damage to friendly units within 15 yards. Only available with 2 stacks of Supercharge.
  •  Electrical Charge — Increases damage done by 25%. Only available with 2 stacks of Supercharge.

Hard Mode

Defeating one of the Assembly of Iron buffs the remaining members with Supercharge. Steelbreaker is the most difficult member of the Iron Assembly if he is the last member of the Assembly standing.

•  Supercharge — Unleashes one last burst of energy as the caster dies, increasing all allies damage by 25% and granting them an additional ability.

Strategy

Phase 1: All three alive

Players can choose to kill the trio in any order they wish, though the popular and easiest route is Steelbreaker, then Molgeim, then Brundir. Be warned that when you kill a boss, the remaining bosses will return to full health. This prevents the raid from being able to take down multiple bosses at the same time.

Just like Maulgar, Illidari Council, Karathress, etc. all of these bosses have to be pulled and tanked away from each other in precise positions. Molgeim and Steelbreaker can be tanked in the two front corners of the room, but Brundir must be tanked towards the back for his Overload (30 yards) which will deal a lot of damage to anyone that is not a tank (often times killing them). Note that Brundir's tank can simply eat the Overloads, since the tank should have a dedicated healer, otherwise only doing raid healing. If it is an issue, the tank should move away as well, then move right back to Brundir when the channeled cast is over. Any casters and the tank on Stormcaller Brundir that can interrupt should be interrupting Chain Lightnings whenever possible. The healer assigned to Brundir's tank should be close to Steelbreaker's back when the fight begins, 35+ yards away.

Molgeim will often put a Rune of Power underneath either Steelbreaker or Brundir so they must be pulled out of the rune far enough to where they're no longer benefiting from the buff and melee or ranged players can bunch up in this rune and output higher damage upon the primary target.

Steelbreaker on occasion will deal a Fusion Punch which the tank must call out for focused healing and a magic dispel of the nature debuff that is inflicted from the punch. Use either a Paladin's [Cleanse], a Priest's [Dispel Magic], or a Warlock can use their Fel Hunter pet and use [Devour Magic] on the tank. If you are killing Steelbreaker first, melee must bunch up to benefit from [Circle of Healing], [Chain Heal] and [Wild Growth] used to counter the nature aura damage.

Phase 2: One Boss Dead

When one of the Iron Council dies, the other two will gain additional abilities. For the most part, they will be tanked in the same general areas but these new abilities will compensate for the dead boss.

Steelbreaker will gain Static Disruption which will cause a random raid member not in melee to take 75% more nature damage for 20 seconds. The whole raid will need to be spread out as this is an aoe and will be extremely irritating to heal through if it hits more than one player.

Molgeim now has a Rune of Death, which will be cast on a random raid member. It is a big, green rune that is impossible to visually miss. Melee and ranged must bunch up and be ready to move in the same general path to avoid confusion, splitting up, and getting out of range of heals.

Brundir will gain Lightning Whirl, which animates like whirlwind and will shoot random lightning bolts at raid members which will deal a large amount of nature damage to random raid members. It can, and should, be interrupted.

Phase 3: Two bosses dead

When two of the three bosses are dead, the last one will separate into a unique phase different from their usual abilities in the previous phases. Players must be alert during this phase because elements are introduced that will almost instantly wipe the group if they don't coordinate around them.

Steelbreaker

Blow Bloodlust/Heroism and hit Steelbreaker with an almost impossible amount of DPS to kill him before you run out of tanks due to Meltdown. The DPS and healing requirements of this achievement are extremely high so it is not recommended for most groups.

Runemaster Molgeim

Molgeim will open up a Rune of Summoning (purple void zone spawn akin to the voidwalkers in TBC) which will spawn lightning elemental adds which will explode for a high amount of damage to anyone within 30 yards when they reach their aggro target. They spawn one at a time, but up to 8 or 9 adds total will be spawned rapidly. They are tauntable and will race after the random players, but they can be taunted by tanks for an emergency target switch. Improved Blizzard and Earthbind Totem DO work on the lightning elementals. All players should move as far from the zone as possible, dropping AoEs in prep for the add arrivals. All AoE helps, however every effort should be made to avoid meeting the adds in melee. If an add bolts free of the AoE, targeted members should run while ranged helps dps down the loose add. Good communication and proper reaction to the add spawns is essential. Also to note, while not necessarily safe, melee dps can help kill the adds as long as one is not chasing them, although it is preferred to let ranged dps take down the spawns.

Stormcaller Brundir

Brundir will lift up into the air and gain Lightning Tendrils. Anybody within a 10 yd range of Brundir will get hit by these tendrils for high nature damage; standing near him for more than a couple of seconds will prove fatal if you are not a tank. He is tauntable, but will clear aggro every time he lifts up into the air, and taunting during Lightning Tendrils will not change his target or course. Occasionally he will fall to the ground and melee can move in to attack, but he will lift again without warning and hit them with his tendrils.

Drops

The  [Archivum Data Disc] /  [Archivum Data Disc] also drops if runemaster Molgeim is killed last.

10-Man

Belt of the Iron Servant Item Level 35Disenchants into: Not disenchantable Binds when picked up Mail Waist 6 Armor +3 Agility or Intellect +4 Stamina +2 Haste +3 Versatility Durability 55 / 55 Requires Level 30 Sell Price: 5 79 92 Boots of the Petrified Forest Item Level 35Disenchants into: Not disenchantable Binds when picked up Leather Feet 5 Armor +3 Agility or Intellect +4 Stamina +3 Haste +3 Versatility Durability 80 / 80 Requires Level 30 Sell Price: 9 2 95 Circlet of True Sight Item Level 35Disenchants into: Not disenchantable Binds when picked up Mail Head 8 Armor +2 Agility or Intellect +6 Stamina +1 Critical Strike +4 Haste   Meta Socket Prismatic Socket Socket Bonus: +4 Critical Strike   Durability 100 / 100 Requires Level 30 Sell Price: 10 70 84 Cloak of the Iron Council Item Level 35Disenchants into: Not disenchantable Binds when equipped Back 3 Armor +2 Strength +3 Stamina +1 Critical Strike +3 Versatility Requires Level 30 Sell Price: 11 24 48 Greaves of Iron Intensity Item Level 35Disenchants into: Not disenchantable Binds when picked up Plate Feet 10 Armor +3 Strength or Intellect +4 Stamina +2 Critical Strike +3 Haste Durability 80 / 80 Requires Level 30 Sell Price: 10 74 87 Lady Maye's Sapphire Ring Item Level 35Disenchants into: Not disenchantable Binds when picked up Unique-Equipped Finger +2 Intellect +3 Stamina +2 Haste +2 Versatility Requires Level 30 Sell Price: 7 76 44 Leggings of Swift Reflexes Item Level 35Disenchants into: Not disenchantable Binds when picked up Leather Legs 6 Armor +4 Agility or Intellect +6 Stamina +3 Critical Strike +4 Haste Durability 120 / 120 Requires Level 30 Sell Price: 10 80 77 Rune-Etched Nightblade Item Level 35Disenchants into: Not disenchantable Binds when picked up Sword One-Hand Speed 2.60 4 – 7 Damage (2.1 damage per second) +2 Agility +3 Stamina +2 Critical Strike +2 Haste Durability 105 / 105 Requires Level 30 Sell Price: 20 59 19 Runetouch Wristwraps Item Level 35Disenchants into: Not disenchantable Binds when picked up Cloth Wrist 2 Armor +2 Intellect +3 Stamina +2 Critical Strike +2 Versatility Durability 55 / 55 Requires Level 30 Sell Price: 7 22 20 Stormtip Item Level 35Disenchants into: Not disenchantable Binds when picked up Unique-Equipped Dagger One-Hand Speed 1.80 1 – 2 Damage (0.8 damage per second) +11 Intellect +3 Stamina +2 Haste +2 Versatility Durability 80 / 80 Requires Level 30 Sell Price: 16 41 24

10-Man Hardmode

Belt of the Crystal Tree Item Level 35Disenchants into: Not disenchantable Binds when picked up Leather Waist 4 Armor +3 Agility or Intellect +4 Stamina +2 Haste +3 Versatility   Prismatic Socket Socket Bonus: +2 Haste   Durability 55 / 55 Requires Level 30 Sell Price: 6 31 96 Loop of the Agile Item Level 35Disenchants into: Not disenchantable Binds when picked up Unique-Equipped Finger +2 Agility +3 Stamina +2 Critical Strike +2 Haste   Prismatic Socket Socket Bonus: +8 Attack Power   Requires Level 30 Sell Price: 7 56 23 Perilous Bite Item Level 35Disenchants into: Not disenchantable Binds when picked up Dagger One-Hand Speed 1.80 2 – 5 Damage (1.9 damage per second) +2 Agility +3 Stamina +1 Critical Strike +2 Haste   Prismatic Socket Socket Bonus: +4 Critical Strike   Durability 75 / 75 Requires Level 30 Sell Price: 22 8 48 The Masticator Item Level 35Disenchants into: Not disenchantable Binds when picked up Fist Weapon One-Hand Speed 2.60 4 – 7 Damage (2.1 damage per second) +2 Agility +3 Stamina +2 Critical Strike +2 Haste   Prismatic Socket Socket Bonus: +2 Agility   Durability 80 / 80 Requires Level 30 Sell Price: 22 16 84 Watchful Eye Item Level 35Disenchants into: Not disenchantable Binds when picked up Held In Off-hand +6 Intellect +3 Stamina +2 Critical Strike +2 Haste Requires Level 30 Sell Price: 7 12 45 Archivum Data Disc Binds when picked up This Item Begins a Quest

25-Man

Ancient Iron Heaume Item Level 35Disenchants into: Not disenchantable Binds when picked up Plate Head 12 Armor +3 Strength or Intellect +5 Stamina +3 Critical Strike +3 Haste   Meta Socket Prismatic Socket Socket Bonus: +6 Spirit   Durability 100 / 100 Requires Level 30 Sell Price: 11 45 69 Drape of the Lithe Item Level 35Disenchants into: Not disenchantable Binds when picked up Back 3 Armor +2 Agility +3 Stamina +2 Critical Strike +2 Haste Requires Level 30 Sell Price: 11 37 27 Handguards of the Enclave Item Level 35Disenchants into: Not disenchantable Binds when picked up Plate Hands 9 Armor +3 Strength or Intellect +4 Stamina +3 Versatility Durability 55 / 55 Requires Level 30 Sell Price: 7 75 36 Insurmountable Fervor Item Level 35Disenchants into: Not disenchantable Binds when picked up Neck +2 Strength +3 Stamina +2 Critical Strike +2 Haste Requires Level 30 Sell Price: 7 56 23 Iron-Studded Mantle Item Level 35Disenchants into: Not disenchantable Binds when picked up Mail Shoulder 7 Armor +3 Agility or Intellect +4 Stamina +3 Critical Strike +3 Haste Durability 100 / 100 Requires Level 30 Sell Price: 9 9 91 Overload Legwraps Item Level 35Disenchants into: Not disenchantable Binds when picked up Cloth Legs 4 Armor +4 Intellect +5 Stamina +4 Critical Strike +3 Haste Durability 120 / 120 Requires Level 30 Sell Price: 14 85 4 Phaelia's Vestments of the Sprouting Seed Item Level 35Disenchants into: Not disenchantable Binds when equipped Leather Chest 30 Armor +4 Agility or Intellect +5 Stamina +3 Critical Strike +4 Versatility   Prismatic Socket Socket Bonus: +3 Spell Power   Durability 165 / 165 Requires Level 30 Sell Price: 11 70 53 Radiant Seal Item Level 35Disenchants into: Not disenchantable Binds when picked up Unique-Equipped Finger +2 Intellect +3 Stamina +2 Haste +2 Versatility Requires Level 30 Sell Price: 7 56 23 Raiments of the Iron Council Item Level 35Disenchants into: Not disenchantable Binds when picked up Cloth Chest 19 Armor +3 Intellect +5 Stamina +3 Haste +3 Versatility   Prismatic Socket Prismatic Socket Socket Bonus: +3 Haste   Durability 165 / 165 Requires Level 30 Sell Price: 14 96 29 Rapture Item Level 232Disenchants into:  [Abyss Crystal]: 1-2 Binds when picked up Staff Two-Hand Speed 3.60 80 – 109 Damage (26.3 damage per second) +158 Intellect +54 Stamina +19 Critical Strike +29 Versatility Durability 120 / 120 Requires Level 80 Sell Price: 23 35 41 Runed Ironhide Boots Item Level 35Disenchants into: Not disenchantable Binds when picked up Leather Feet 5 Armor +3 Agility or Intellect +4 Stamina +2 Critical Strike +3 Haste   Prismatic Socket Socket Bonus: +2 Agility   Durability 75 / 75 Requires Level 30 Sell Price: 8 59 96 Runeshaper's Gloves Item Level 35Disenchants into: Not disenchantable Binds when picked up Mail Hands 6 Armor +3 Agility or Intellect +4 Stamina +2 Critical Strike +3 Haste   Prismatic Socket Socket Bonus: +5 Spell Power   Durability 55 / 55 Requires Level 30 Sell Price: 6 38 89 Steelbreaker's Embrace Item Level 35Disenchants into: Not disenchantable Binds when picked up Plate Chest 16 Armor +4 Strength or Intellect +6 Stamina +4 Critical Strike +3 Haste   Prismatic Socket Socket Bonus: +4 Strength   Durability 165 / 165 Requires Level 30 Sell Price: 15 24 81 Stormrune Edge Item Level 35Disenchants into: Not disenchantable Binds when picked up Sword Two-Hand Speed 3.60 7 – 13 Damage (2.8 damage per second) +4 Agility +6 Stamina +4 Critical Strike +3 Haste Durability 120 / 120 Requires Level 30 Sell Price: 29 49 39 Unblinking Eye Item Level 35Disenchants into: Not disenchantable Binds when picked up Neck +2 Intellect +3 Stamina +2 Critical Strike +2 Versatility Requires Level 30 Sell Price: 7 56 23

25-Man Hardmode

Belt of Colossal Rage Item Level 35Disenchants into: Not disenchantable Binds when picked up Plate Waist 9 Armor +2 Strength or Intellect +4 Stamina +3 Critical Strike +2 Haste   Prismatic Socket Prismatic Socket Socket Bonus: +3 Strength   Durability 55 / 55 Requires Level 30 Sell Price: 7 96 62 Drape of Mortal Downfall Item Level 35Disenchants into: Not disenchantable Binds when picked up Back 3 Armor +2 Intellect +3 Stamina +2 Critical Strike +2 Haste   Prismatic Socket Socket Bonus: +3 Spell Power   Requires Level 30 Sell Price: 11 90 38 Fang of Oblivion Item Level 35Disenchants into: Not disenchantable Binds when picked up Unique-Equipped Dagger One-Hand Speed 1.80 2 – 5 Damage (1.9 damage per second) +2 Agility +3 Stamina +1 Critical Strike +1 Haste   Prismatic Socket Socket Bonus: +2 Agility   Durability 80 / 80 Requires Level 30 Sell Price: 23 84 13 Greaves of Swift Vengeance Item Level 35Disenchants into: Not disenchantable Binds when picked up Mail Feet 7 Armor +2 Agility or Intellect +4 Stamina +3 Critical Strike +3 Haste   Prismatic Socket Prismatic Socket Socket Bonus: +3 Agility   Durability 80 / 80 Requires Level 30 Sell Price: 10 34 48 Sapphire Amulet of Renewal Item Level 35Disenchants into: Not disenchantable Binds when picked up Neck +2 Intellect +3 Stamina +2 Haste +2 Versatility   Prismatic Socket Socket Bonus: +2 Versatility   Requires Level 30 Sell Price: 7 56 23 Shoulderpads of the Intruder Item Level 35Disenchants into: Not disenchantable Binds when picked up Leather Shoulder 5 Armor +3 Agility or Intellect +4 Stamina +55 Hit +2 Critical Strike +2 Haste   Prismatic Socket Prismatic Socket Socket Bonus: +6 Agility   Durability 100 / 100 Requires Level 30 Sell Price: 8 84 55 Archivum Data Disc Binds when picked up This Item Begins a Quest

Related achievements

•  But I'm On Your Side (10 player)
•  Can't Do That While Stunned (10 player)
•  I Choose You, Runemaster Molgeim (10 player)
•  I Choose You, Stormcaller Brundir (10 player)
•  But I'm On Your Side (25 player)
•  Can't Do That While Stunned (25 player)
•  I Choose You, Runemaster Molgeim (25 player)
•  I Choose You, Stormcaller Brundir (25 player)

The following achievements are for the encounter's hard mode.

•  I Choose You, Steelbreaker (10 player)
•  I Choose You, Steelbreaker (25 player)

Quotes

Steelbreaker

Aggro

You will not defeat the Assembly of Iron so easily, invaders!

Special

You seek the secrets of Ulduar? Then take them!

Killing a player

• So fragile and weak!
• Flesh... such a hindrance.

Berserk

This meeting of the Assembly of Iron is adjourned!

Death

• My death only serves to hasten your demise.
• Impossible!

Runemaster Molgeim

Aggro

Nothing short of total decimation will suffice.

Rune of Death

Decipher this!

Summon adds

Face the lightning surge!

Killing a player

• The world suffers yet another insignificant loss.
• Death is the price of your arrogance.

Berserk

This meeting of the Assembly of Iron is adjourned!

Death

• The legacy of storms shall not be undone.
• What have you gained from my defeat? You are no less doomed, mortals!

Stormcaller Brundir

Aggro

Whether the world's greatest gnats or the world's greatest heroes, you're still only mortal!

Special

Stand still and stare into the light!

Taking flight

Let the storm clouds rise and rain down death from above!

Killing a player

• A merciful kill!
• HAH!

Berserk

This meeting of the Assembly of Iron is adjourned!

Death

• The power of the storm lives on...
• You rush headlong into the maw of madness!

Sound Files

See Sound Files of Ulduar: Assembly of Iron

Videos

10-man encounter

• Play video
• Play video
• Play video

25-man encounter

• Play video
• Play video
• Play video
• Play video

Patch changes

• Hotfix (2009-05-13): If a pet dies from Overwhelming Power on Steelbreaker in Ulduar, Steelbreaker will gain an Electrical Charge.
  
• Hotfix (2009-05-04): In the Assembly of Iron encounter, the duration of Overwhelming Power has been increased to 30 seconds in heroic mode and the amount of healing that Steelbreaker receives from Electrical Charge (sic) has been reduced to 20% of his max health.
  
• Hotfix (2009-04-28): The Assembly of Iron encounter has received the following changes: The damage of Rune of Death has been reduced, the damage of Chain Lightning has been reduced, and the damage of Lightning Whirl has been reduced.
  
• Hotfix (2009-04-21): The Iron Council encounter has received the following changes: the amount healed through Electric Charge (sic) has been increased, the timer to Berserk has been increased, the range of Overload has been decreased, the Lightning Elementals are no longer immune to the nature school, Stormcaller Brundir's melee damage has been decreased (only in normal mode), and increased Runemaster Molgeim's damage (only in heroic mode).
  
• Hotfix (2009-04-15): The effects of Meltdown will no longer be able to be bypassed by using [Divine Shield].
  
• Patch 3.1.0 (2009-04-14): Added.
  

External links

World of Raids Tactics for the Assembly of Iron based on PTR testing.