The Assembly of Iron

The Assembly of Iron is a boss found in the Ulduar adventure. It is the first boss of the adventure's second wing, The Antechamber of Ulduar.

Hero Powers
For full information, see Fusion Punch, Rune of Summoning, and Lightning Whirl. 

Deck
Note that the below classes are listed purely for reference, and have no effect on the Assembly of Iron's use of the cards in the encounter.

Starting Board
The Assembly of Iron does not start the game with any minions on the board.

Strategy
The Assembly of Iron has three phases. Each phase represents a different opponent (the three members of the Assembly of Iron), each of which has 10 Health.

Phase One: You face Steelbreaker, with the hero power Fusion Punch. While arguably weaker than the other Assembly of Iron hero powers, Fusion Punch will foil any sort of secret-centered deck and do some damage to you in the meantime. It's a little bit like the hero power in the Kel'Thuzad fight - a simple hero power designed mainly to soften up the enemy before the main act. Once you kill Steelbreaker, which shouldn't take very long in an aggressive deck, you move on to Phase Two.

Phase Two: You face Runemaster Molgeim, with the hero power Rune of Summoning. This is perhaps the most dangerous phase, as the aggressive build that can often prevail against this boss is foiled by the 3/2 elementals. However, this can easily be remedied by the use of sturdy Taunt minions like Mogu'shan Warden. Once you kill Molgeim, which should take as little time as possible, you move on to Phase Three.

Phase Three: You face Stormcaller Brundir, with the hero power Lightning Whirl. Lightning Whirl is a powerful spell, especially against a deck of low-health minions, but once you're facing Brundir the game is likely to end in your favor; dealing 10 damage usually is not very difficult.

Yogg-Saron
Introduction: Welcome to Ulduar, mortals...

Steelbreaker
Opening remark: You shall fall against the Assembly of Iron! Emote response: You dare speak to me? Hero Power: You shall be broken! Cards: Wisdom of Ulduar: You seek our secrets? Our power? You shall see them first-hand! Defeat: My death... only hastens... your demise...

Runemaster Molgeim
Greeting: Fool! We do not fall so easily!

Emote response: Nothing short of utter decimation!

Hero Power: Minions, destroy them!

Cards:

Wisdom of Ulduar: Decipher this!

Defeat: My legacy will not be undone...

Stormcaller Brundir
Greeting: You are only mortals!

Emote response: Cherish your final moments!

Hero Power: The power of lightning surges through me!

Cards:

Wisdom of Ulduar: The power of the storm gives me strength!

Defeat: You rush headlong into the maw of madness...

Yogg-Saron
On defeat: I see you...