Assembly of Iron

The Assembly of Iron
Race(s)	Iron dwarf, Iron vrykul, Iron giant (Humanoid)
Level	?? Boss
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 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.

Abilities

Hard Enrage - 15 minutes after encounter starts.
Supercharge - as each boss dies, the others will gain a 25% damage increase and an additional ability. After the first Assembly member dies the remaining two will gain a 25% increase. When 2 Assembly members die the remaining will gain a 50% increase. Note that all abilities below do not factor the supercharge damage increase into their numbers.

Steelbreaker

10 million hp on heroic, 3 million hp on normal
Melee hits for: ~20k Heroic ~10k normal.

File:Ability GolemThunderClap.png Fusion Punch - Inflicts 18,850 to 21,150 (Heroic: 35,000) Nature damage to his target, and deals additional 15,000 (Heroic: 20,000) Nature damage every 1 second, for 4 seconds. Hits tank only. The debuff is a magic effect and must be dispelled as quickly as possible.
High Voltage - An aura that inflicts 1,500 (Heroic: 3,000) to the whole raid every 3 seconds.
- Static Disruption (1 dead) - Inflicts 3,500 (Heroic: 7,000) Nature damage to enemies in 6 yards radius area. Also increases Nature damage taken by 75% for 20 seconds. Prefers ranged targets, but will choose a player in melee ranged if no ranged targets are available.
  - Overwhelming Power (2 dead) - Targets the current tank on Steelbreaker. Causes the affected player to deal 200% more damage, but gain meltdown after the duration of the debuff. 60 second duration 10 man, 30 second duration heroic.
  - Meltdown (2 dead) - Occurs at the completion of the Overwhelming Power debuff. Kills the tank and causes 29250 to 30750 Nature damage to any players within 15 yards.
  - Electrical Charge (2 Dead) - Any time a player dies after Steelbreaker is the only member of the Assembly alive Steelbreaker will heal for 20% of his maximum health and gain 25% extra damage (reducible by Wound Poison/Mortal Strike/Aimed Shot.)

Runemaster Molgeim

10 million hp on heroic, 3 million hp on normal
Melee hits for: 8-10k against a well geared plate wearer on normal mode.

Rune of Power - A GTAoE that will buff anyone standing on this rune to do more damage. Summoned under one of the three assembly members who need to quickly be moved out of it's effect. 5 yd radius
File:Spell Misc HellfirePVPCombatMorale.png Shield of Runes - Shield absorbs up to 50,000 heroic 20,000 normal damage. If the shield absorbs the toral amount this gives Moldeim a 50% damage increase for 15 seconds. Should be purged, dispelled or spellstolen.
- Rune of Death (1 dead) - 26 yard radius GTAoE which will do 3500 shadow damage per half second on heroic or 2750 Shadow damage per half second normal.
  - Rune of Summoning (2 dead) - Creates a rune of summoning which periodically spawns Lightning Elementals. Elementals will charge toward members of the raid and explode on contact.
  - Lightning Blast (2 dead) - When the add reaches its target it will deal a 30 yard explosion of 14138 to 15862 Nature damage on heroic or 9425 to 10575 nature damage on normal killing the add in the process.

Stormcaller Brundir

10 million hp on heroic, 3 million hp on normal
Melee hits for: 8-10k, crit for 25k against leather on normal mode.

Chain Lightning - Deals 5550 to 6450 nature damage on heroic or 4163 to 4837 nature damage on normal. Can chain onto an additional target within 10 yards up to five targets. Spread out to avoid chaining this ability. Can be interrupted and is affected by effects which increase casting time.
Overload - Similar to Loken or Murmur this 6 second channeled spell deals 25,000 nature damage on heroic or 20,000 nature damage on normal to all targets within 20 yards of Brundir. Brundir generates the emote "Stormcaller Brundir begins to Overload!" while casting. While casting gains the Stormshield effect which deals 250 nature damage and grants immunity to stun effects.
- Lightning Whirl (1 dead) - Deals 5655 to 6345 nature damage on heroic or 3770 to 4230 nature damage on normal per bolt. Fires multiple bolts per second and needs to be interrupted as quickly as possible.
  - Lightning Tendrils (2 dead) - Brundir lifts off into the air and gains an aoe ability that deals 5000 nature damage per second on heroic or 3000 nature damage per second to all targets in close range. Will randomly switch targets and needs to be kited away from the raid to minimize damage. Raid members should spend this portion of the fight keeping as far away from Brundir as possible. Resets aggro when he lands.
  - Stormshield (2 dead) Brundir also becomes immune to stun effects once Steelbreaker and Runemaster Molgrim are dead, as he is not previously. Stun effects against him before this are affected by diminishing returns however.

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] or a Priest's [Dispel Magic]. 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. The three tanks can work out a rotation to keep him in the same area of the room while ranged players nuke him down. 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.

Quotes

Steelbreaker

Aggro:

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

Killing a player:

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

Special:

You seek the secrets of Ulduar? Then take them!

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.

Killing a player:

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

Rune of Death:

Decipher this!

Summon Adds:

Face the lightning surge!

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!

Killing a player:

A merciful kill!
HAH!

Special:

Stand still and stare into the light!

Taking flight:

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

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

Drops

Normal Mode
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

Normal Hard Mode
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 of Fate Item Level 35Disenchants into: Not disenchantable Binds when picked up Neck +2 Intellect +3 Stamina +2 Haste +2 Versatility Prismatic Socket Socket Bonus: +2 Critical Strike Requires Level 30 Sell Price: 7 56 23 Archivum Data Disc Binds when picked up This Item Begins a Quest

Heroic Mode
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 Rune Edge Item Level 57 Binds when picked up Axe Main Hand Speed 2.30 54 – 102 Damage (33.9 damage per second) +5 Strength +5 Agility +5 Stamina Durability 75 / 75 Requires Level 52 Sell Price: 3 53 38 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 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

Heroic Hard Mode
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