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Comment by synistrad

at this figth the dual spec gonna shine

Comment by 192690

Is it possible for a second tank to build up threat on Steelbreaker, get out of range before the main tank dies to Meltdown, and then continue tanking Steelbreaker?

Comment by 129197

At least in 10 man we found Giant - Rune guy - Caster to be easiest.

And they do enrage if not killed quickly enough.

Comment by Tekunin

Killed this on 10-man using two tanks.

Group composition:
Tank 1: Death Knight
Tank 2: Warrior
Healer 1: Holy Priest
Healer 3: Holy Priest
Healer 2: Resto Druid
DPS 1: Mage
DPS 2: Rogue
DPS 3: Shadow Priest
DPS 4: Shaman (Enh)
DPS 5: Warlock

Kill order was 1.) Steelbreaker, 2.) Runemaster Molgeim, 3.) Runemaster Brundir

Pull:

Pulled Steelbreaker towards the entrance of the room with Death Knight tanking him, and had Warrior take the two Runemasters to the left of where the trio start. One healer is assigned to the MT, one to the OT and one stands between the two tanks but out of range of Runemaster Brundir's "Overload" ability and spot heals. A melee with short interrupt (in this case a Rogue) is sent to OT in order to help stun and interrupt chain lightning.

Phase 1:

Tank and spank Steelbreaker with the MT healer winding up a big heal that will land just as soon as the Fusion Punch damage is dealt, while immediately dispelling the left over magic DoT on the tank (fatal if not removed). Dispellers or Mages should also focus Runemaster Molgeim so to dispell or spell steal his buff that absorbs 50,000 damage but increases damage by 50% for X amount of time (red anti-magic shell graphic).

The healers and DPS should stack together for AoE healing due to the static aura on Steelbreaker that does 3,000 damage every 3 seconds, while the tank moves Steelbreaker backwards any time a Rune of Power is summoned underneath the boss's feat. DPS and the MT healer should adjust accordingly to stand in the rune in order to help DPS faster to beat the 10 minute enrage timer.

Phase 2:

Once Steelbreaker is dead, the MT pulled Runemaster Molgeim off of the OT and tanked him across the room, and the two Runemasters' damage increases. At this point the melee must also interrupt Runemaster Brundir's new ability, "Lightning Whirl" as it does massive amounts of raid damage. Tank and spank Runemaster Molgeim while moving out of the Rune of Death (large green circles on the ground that kill you very fast). Continue to dispell the absorption shield and interrupting Runemaster Brundir's spells until Runemaster Molgeim is dead.

Important: Make sure the raid is awlays out of range of Runemaster Brundir's "Overload" ability while adjusting and moving due to Runes of Death.

Phase 3:

Ranged DPS and healers spread out in a large semi circle around Runemaster Brundir and stay at max range in order to move away for the "Overload" ability with minimal travel time. Runemaster Brundir is no longer stunnable and now does even more damage, so anything must be done in order to interrupt his spells.

Periodically Runemaster Brundir will levitate in the air with tendrils of lightning striking the floor beneath him. He will pick someone and follow them for a short amount of time, dealing massive amounts of aoe damage to anyone caught in the lightning beneath him. The person he is targeting must kite him until he switches to another person, who must then kite him as well. He will switch targets 4-5 times before landing again. Due to the raid positioning kiting him is fairly easy.

At this point the fight is all but won, so long as everyone maintains situational awareness and kite him properly.

Comment by 174220

There is also a 10 minute enrage on Iron council.

Comment by 167903

Assembly of Iron - Cool voices, have a tingling "Metallic" sound to follow their words.

Steelbreaker
/script PlaySoundFile("Sound\\Creature\\Steelbreaker\\UR_Steelbreaker_Aggro01.wav")
/script PlaySoundFile("Sound\\Creature\\Steelbreaker\\UR_Steelbreaker_Berserk01.wav")
/script PlaySoundFile("Sound\\Creature\\Steelbreaker\\UR_Steelbreaker_Death01.wav")
/script PlaySoundFile("Sound\\Creature\\Steelbreaker\\UR_Steelbreaker_Death02.wav")
/script PlaySoundFile("Sound\\Creature\\Steelbreaker\\UR_Steelbreaker_Power01.wav")
/script PlaySoundFile("Sound\\Creature\\Steelbreaker\\UR_Steelbreaker_Slay01.wav")
/script PlaySoundFile("Sound\\Creature\\Steelbreaker\\UR_Steelbreaker_Slay02.wav")

Stormcaller Brundir - Aussie.
/script PlaySoundFile("Sound\\Creature\\StormcallerBrundir\\UR_Brundir_Aggro01.wav")
/script PlaySoundFile("Sound\\Creature\\StormcallerBrundir\\UR_Brundir_Berserk01.wav")
/script PlaySoundFile("Sound\\Creature\\StormcallerBrundir\\UR_Brundir_Death01.wav")
/script PlaySoundFile("Sound\\Creature\\StormcallerBrundir\\UR_Brundir_Death02.wav")
/script PlaySoundFile("Sound\\Creature\\StormcallerBrundir\\UR_Brundir_Flight01.wav")
/script PlaySoundFile("Sound\\Creature\\StormcallerBrundir\\UR_Brundir_Power01.wav")
/script PlaySoundFile("Sound\\Creature\\StormcallerBrundir\\UR_Brundir_Slay01.wav")
/script PlaySoundFile("Sound\\Creature\\StormcallerBrundir\\UR_Brundir_Slay02.wav")

Runemaster Molgeim
/script PlaySoundFile("Sound\\Creature\\RunemasterMolgeim\\UR_Molgeim_Aggro01.wav")
/script PlaySoundFile("Sound\\Creature\\RunemasterMolgeim\\UR_Molgeim_Berserk01.wav")
/script PlaySoundFile("Sound\\Creature\\RunemasterMolgeim\\UR_Molgeim_Death01.wav")
/script PlaySoundFile("Sound\\Creature\\RunemasterMolgeim\\UR_Molgeim_Death02.wav")
/script PlaySoundFile("Sound\\Creature\\RunemasterMolgeim\\UR_Molgeim_Power01.wav")
/script PlaySoundFile("Sound\\Creature\\RunemasterMolgeim\\UR_Molgeim_Slay01.wav")
/script PlaySoundFile("Sound\\Creature\\RunemasterMolgeim\\UR_Molgeim_Slay02.wav")
/script PlaySoundFile("Sound\\Creature\\RunemasterMolgeim\\UR_Molgeim_Summon01.wav")

Comment by Norseguy

Doesn't enrage on 10 man, we got lucky :).

Comment by Mosruio

If you leave steelbreaker as last one, he will get 25%^2 dmg buffs and 25% for every person in raid dying. Shame I didn't get a screenshot from that 58090 hit trough dispersion (90% dmg reduction).

Comment by Shorty

Someone called this guy "Captain Falcon", and now I will never be able to fight this guy without hearing "Falcon... PUNCH!" in my head whenever he uses Fusion Punch.

ed: Said "Rune punch".

Comment by Herman

new enrage is over 12 mins

Comment by 130654

If you have a pally tank, have him tank the steelbreaker for the most safe curing of the Falcon Punch. It's cleansable, and when it lands, you will need the healing from your healers for that hit, so using the tank himself to cleanse it instead works wonders. Also, who watches the mob closer than the one tanking it? :)

Comment by zapiks44

The loot for this encounter drops from whomever you kill last of the three bosses, not always from Brundir (as Wowhead incorrectly states).

Comment by 216529

One thing my guild discovered (on 10-man, at least) is that if you have a lock with a felhunter out, you can make a macro to have it devour the Fusion Punch DoT, thus freeing up your healers a bit.

Devour Magic may share a cooldown with Shadow Bite, though. If so, you'll want to make sure to disable the latter while you're killing Steelbreaker.

Comment by 303615

Is the Fusion Punch reflectable?

Comment by 277148

Just have a paladin tank him if you have one, they can cleanse the fusion punches to free up the healers GCD.

Comment by 368237

I've yet to try this on my DK tank, but shouldn't you be able to avoid the dot from Fusion Punch
completely by using Anti-Magic Shell?

Comment by Kwahirn

Overwhelming power seems to last one minute on 10 man.

Comment by 223121

If you go on the pair of leather shoulders dropped on Hard mode of Assembly, it says only Steelbreaker drops them.

Is the only hard-mode of Assembly of Iron Steelbreaker last? Or can these drop if you have the Iron Vrykul guy last?

Thanks

Comment by Zengrenadier

I've researched some of the strats for hard mode and I didn't find anything about this way of doing things.

My group found a pretty good way to increase our DPS on Hard mode by killing Molgeim right after he drops a rune of power, finishing him off and moving Steelbreaker near it giving our DPS a huge increase for the last part of the fight. Managed to finish off Steelbreaker in roughly 1 min 40 secs before I died from his Overwhelming power debuff.

Doesn't seem to give that debuff immediately so our warrior MT taunted him off me at the beginning of phase 3 so I can cleanse him myself without the healers using up a GCD

Comment by alexcd

Any1 know if his p punch is affected by his supercharges/electrical charges?

Comment by citrique

While soloing this encounter with Brundir or Molgeim last is currently quite possible as a blood DK, soloing it with Steelbreaker last is currently not possible.

You have to kill Molgeim first as spending phase 2 trying to kite them around is quite difficult, and should Steelbreaker clip a rune of power while casting Fusion Punch, you will easily lose over half your HP from it. The Static Disruption debuff put up in P2 causes Fusion Punch to hit you for ~35K and the dot ticks for 25k/sec afterwards. Unfortunately, resistance mechanics do not work on Fusion Punch's initial hit, only the dot tick damage afterward. This is the primary issue with this boss during the phase. You also need to be killing Brundir, but will often be forced out of range of him and will be forced to attack Steelbreaker for healing. Even with Spellshattering rune, spell damage reduction meta gem and max consumables, the incoming damage is not outhealable yet.

Phase 3's DPS check is 49969 DPS assuming you get Overwhelming Power applied the moment the phase starts. This is almost possible to reach in tank gear with max vengeance as a blood DK due to the damage increasing buff it provides, so phase 3 should be doable if you can get out of phase 2 alive.

This version of the encounter will probably be soloable sometime early in 4.3 if Blood DKs receive further survivability buffs.

Comment by Esploratore

Soloed this one on normal mode (steelbreaker - stormcaller - runemaster , but could also swap the last 2) with 381 item level full tank gear as a blood dk.

The strategy was using AMS each time I could on fusion punches, and cds when AMS was on cd, also the thing which did the trick for my first kill was that doing this way I always died a few sec before steelbreaker died, or together with him, so since I used IBF in the fight and I lasted like 4 mins, I decided to use IBF on 1st fusion punch, then AMS, then other cds, so IBF came back ready again before I died with steelbreaker almost dead, this was the solution.

Then in phase 2 I went for runemaster and the damage was much lower, but I stood out of runes of death and runes of power due to my low tank gear, and on phase 3 I also had to kill the adds from the runes of summoning, AMS when possible, else heart striked them down fast.

Ofc did the other non hardmode, and it just took longer, as on phase 3 stormcaller brundir keeps doing the lightning tendrils during which he does like 3,5k nature damage every a few sec, not dangerous and also you cannot attack him, so really not challenging and only takes longer.

Soloed also the hardmode after A LOT of tries, tried for months with improving tank gear, till at last with 395 item level in full tank gear + runscroll of fortitude + drums of forgotten kings + 90 strength and stamina buff + prismatic elixir I managed to do it.

Slightly different strategy: with the gear improvement and all buffs I could survive fusion punches in p1 with no cds at all and just good death strike timing, so I did, used AMS sometimes, but never used on the last punches of p1, cause due to a debuff called static disruption, he does like double damage (talking about over 130k from a single fusion punch) in p2, so used AMS on the first of p2, used other cds like ghoul sacrifice, vampiric blood ofc and IBF in p2, interrupted the lightning whirl of stormcaller brundir (went for runemaster molgeim on p1).

When brundir died p3 started and steelbreaker does even more damage with punches, could be close to 180k from what I recall, so absolutely AMS each time I could, luckily I still had 2 cds: lichborne and ERW, and was enough to survive.

Steelbreaker in p3 also puts a debuff on you called overwhelming power, it's what ends the encounter, you have 1 minute: either you kill him before or you die, no matter the hp you have.

Still had 7 sec when steelbreaker died, and the choice of the prismatic elixir vs flask of steelskin was very important, checked recount, 99% of the incoming damage is nature damage, 1% physical, I had 150k blood shield most of the time and they just never broke through it at all.

Also 3-manned the 25-man version (blood dk in tank gear, 394 item level, holy paladin and fire mage in aroun 390) on both normal modes, not possible on hardmode not even with 2 dks due to the fact that steelbreaker also heals himself when he kills an enemy on p3.

Differences are: they hit much harder, even in full tank gear physical damage in p1 is impossible to outheal solo, luckily with our setup, since fusion punches are a magic effect (and they also hit MUCH harder on 25), the holy paladin could dispell them from me, and as always I could AMS 1\3 of them, so I didn't get the dot.

So, due to the damage of steelbreaker, we killed him first, then runemaster, which also hit very hard, over 30k in phase 2, then stormcaller, still had like 3 mins before the enrage, and always kited them out of runes of power.

Even here, it goes much faster leaving runemaster up for p3 and killing stormcaller on p2, like 2-3 mins faster.

Comment by 911103

Soloed I Choose You, Steelbreaker (10 player) as a Demo Warlock with Voidlord.

Tactic:
Bosses are tanked by a Voidlord. Phase 1 is the most difficult, because you are fighting with all 3 Bosses. Kill Runemaster Molgeim as the first. You have to move out Bosses as soon as possible from Rune of Power (ignoring Stormcaller Brundir). Stand in a Rune to increase your dps. Your minion will receive a lot of damage from Steelbreaker's Fusion Punch. Don't stand too close to Brundir because of his Overload (20 yard range). In phase 2 as a second kill Stormcaller Brundir. In phase 3 you will only fight with Steelbreaker. Due to Overwhelming Power your Voidlord will deal 200% more damage. After one minute Voidlord die, but until then Steelbreaker should be dead. Good Luck and Have Fun!

Video:
www.youtube.com/watch?v=BC2WIlFd4Hw

Comment by Nobbel

How to: Solo The Assembly of Iron Hard Mode
http://youtu.be/wQUJhiIFnm8

Comment by Tykes

For anyone wondering; the kill order for hard mode is Runemaster Molgeim > Stormcaller Brundir > Steelbreaker.

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Steelbreaker

This NPC can be found in Ulduar .

UlduarThe Siege of UlduarFlame LeviathanIgnis the Furnace MasterRazorscaleXT-002 DeconstructorThe Antechamber of UlduarAssembly of IronKologarnAuriayaThe Keepers of UlduarFreyaHodirMimironThorimThe Descent into MadnessGeneral VezaxYogg-SaronCelestial PlanetariumAlgalon the ObserverAssembly of IronSteelbreakerRunemaster MolgeimStormcaller BrundirStormcaller BrundirRunemaster MolgeimSteelbreakerAbilitiesSteelbreaker

High Voltage - An aura that inflicts 1,500 (25 Player: 3,000) to the whole raid every 3 seconds.

Fusion Punch - Inflicts 18,850 to 21,150 (25 Player: 35,000) Nature damage to his target, and deals additional 15,000 (25 Player: 20,000) Nature damage every 1 second, for 4 seconds.

1 Supercharge] Static Disruption - Inflicts 3,500 (25 Player: 7,000) Nature damage to enemies in 6 yards radius area. Also increases Nature damage taken by 25% (25 Player: 75%) for 20 seconds.

2 Supercharges] Overwhelming Power - Increases the size and damage done by his target by 200%, and affects it with Meltdown after 60 (25 Player: 30) seconds.

2 Supercharges] Meltdown - Causes the target to die, dealing 29,250 to 30,750 Nature damage to friendly units within 15 yards.

2 Supercharges] Electrical Charge - Increases Steelbreaker's damage by 25% and heals him for 20% of his maximum hit points whenever a player or a pet dies. Affected by healing reduction effects.

Runemaster Molgeim

Shield of Runes - Absorbs 20,000 (25 Player: 50,000) damage. When the Shield is broken by damage, it increases Molgeim's damage by 50% for 15 seconds. Using Spellsteal bypasses the damage increase.

Rune of Power - Summons a Rune of Power under the feet of a random target. Rune of Power increases the damage of everybody who stands on it by 50%. Lasts 1 minute.

1 Supercharge] Rune of Death - Summons a Rune of Death under the feet of a random player. Rune of Death inflicts 2,750 (25 Player: 3,500) Shadow damage to players within 13 yards of it, every half-second for 30 seconds

2 Supercharges] Rune of Summoning - Summons a Rune of Summoning near a random player. Rune of Summoning periodically spawns Lightning Elemental, which will rush towards random players and cast Lightning Blast.

2 Supercharges] Lightning Blast - Inflicts 9,425 to 10,575 (25 Player: 14,138 to 15,862) Nature damage to all players within 30 yards of the caster. The Lightning Elemental dies after the spell goes off.

Stormcaller Brundir

Chain Lightning - Inflicts 4,163 to 4,837 (25 Player: 5,550 to 6,450) Nature damage to its main target, and arcs to nearby players. Interruptible.

Overload - Inflicts 20,000 (25 Player: 25,000) Nature damage to players within 30 yards of the caster, after 6 seconds of channeling. Also applies knockback.

1 Supercharge] Lightning Whirl - Inflicts 3,770 to 4,230 (25 Player: 5,655 to 6,345) Nature damage to random players every 1 second for 5 seconds. Interruptible.

2 Supercharges] Lightning Tendrils - Chooses a random target and starts flying towards it. Players near Brundir take 3,000 (25 Player: 5,000) Nature damage every 1 second until they get away. Brundir cannot be stunned or interrupted while casting Lightning Tendrils.

Encounter Journal

Heroic		Mythic
Deadly		Important
Tank		DPS
Healer		Interruptible
Magic		Curse
Poison		Disease
Enrage

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.
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 2676 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 535 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 401 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 2755 damage. If 2755 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 368 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 1338 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 201 Nature damage every 3 sec to all enemies.
- Fusion Punch – An attack infused with energy that inflicts 2676 Nature damage and an additional 2007 Nature damage per second.
- Static Disruption – Deals 937 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 themself and dealing 4014 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.

Quotes (3)

Guides

Burn 'em Down: A Pocket Guide to Ulduar Ulduar Timewalking

Steelbreaker

Encounter Journal

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