Iron Juggernaut 10 H

A Steel Colossus at the Gates of Orgrimmar

Quick Facts

Introduction

You continue your way past Galakras towards Orgrimmar, but are stopped by this steel scorpion. The fight is divided into two phases, the Assault Phase (lasting two minutes) and the Siege Phase (lasting one minute). The boss switches back and forth between these phases and starts in the Assault Phase. The Berserk begins after 7:30 minutes and is survivable for a short time.
You can run the fight later with two healers, but you should keep in mind that they must collectively provide approximately 500 k HPS over an extended period, including movement. So for the beginning, three healers are clearly recommended here.

Tank the boss as he stands there before the pull and use Bloodlust. There is no incoming damage spike at the end and no burn phase, so this is the best place to use all your cooldowns and trinkets. The boss deals a fair amount of avoidable damage to the raid. None of it is lethal, but the combination of several abilities in quick succession can very well kill you. The abilities are also unusually fast, which requires high concentration to avoid getting hit constantly. Make it as easy as possible for your healers and dodge as much as you can.
Ranged players should stand about 8 yards apart from each other to the left of the boss (due to AoE abilities), and melees behind the boss. The boss’s main attack on the tank deals frontal AoE damage, so never stand in front of the boss.

Ability: Flame Vents

Every 10 s | Frontal AoE | Tank Debuff

About every 10 seconds, the boss casts Flame Vents, which applies the buff Ignite Armor on the tank (and all other players standing in front of the boss).

🛡️ Taunting Taunt at 3 stacks of the debuff. The tank who tanks the boss at the start of the phase should only take two stacks and then position themselves for the Crawler Mines. They can also take three stacks, but will then have a harder time getting to the mines quickly because the third stack and the mines arrive at the same time.

Ability: Demolisher Cannons

Every 8-10 s | 6 y AoE

Demolisher Cannons are cast by the boss relatively frequently and seem to affect only ranged characters. They deal 200 k fire damage to a player and 6 y to the area around them. This is the main reason why players spread out. This ability is also cast during the Siege Phase, but much less frequently there.

Ability: Borer Drill

Every 17 s | Tunnel AoE

The Borer Drill appears regularly and burrows through the ground. Three of these drills travel in a straight line from the boss towards the players and veer off course along the way. You have no choice but to dodge them.

Ability: Laser Burn

Every 2-8 s | DoT

The Laser Burn is cast unavoidably on a player every few seconds and cannot be dispelled, though it can be removed by any type of immunity. Because it is cast so frequently, it is a constant source of damage during the Assault Phase and deals approximately 35 k DPS plus additional 350 k damage when applied.

Ability: Mortar Blast

Every 5-10 s | Ground AoE (8 y)

Mortar Blast is indicated by a red circle that appears at a player's location, which you must dodge within two seconds.

Heroic Ability: Ricochet (Circular Saw)

Every 15 s | Moving Circular Saw

A circular saw travels away from the boss towards the ranged players, makes a wide turn, and returns to the boss. Because of this, ranged players should not stand behind the melees, as the saw blade will otherwise always pass right through them.

Ability: Crawler Mines

Every 30 s | 3 Clickable Mines | Physical Damage

The Crawler Mines appear in groups of three every 30 seconds and burrow into the ground at random locations. If a player right-clicks on these mines, they cause approx. 1.5 million physical damage via Engulfed Explosion to that player and tosses them up. If they are not triggered within 15 seconds, they deal this damage to all raid members, and a wipe is almost certain.

🛡️ Tank Task Your task is to intercept these mines one after another. The healers should top your HP in between. Since it’s physical damage, the 1.5 million sounds worse than it is. After a few attempts, you’ll get a feel for where the spawning Crawler Mines will settle, allowing you to reach the first one quickly.
As explained above regarding the tank debuff, one tank will take two debuff stacks at the start of every Assault Phase and then deal with the three mines. After three stacks, they taunt off from the other tank, who then goes on a mine hunt of his own. If played correctly, you won’t need help from other players with the mines.

If it ever becomes necessary for a mine to be triggered by a non-tank, this could be done using Greater Invisibility, Dispersion, Elusiveness in combination with Glyph of Cloak of Shadows or Divine Shield.

During this phase, which lasts one minute, the boss remains stationary and does not need to be tanked. First, here is a description of all abilities; the sequence of events for this phase is described below.

Ability: Seismic Activity

Every 1 s | Raid-wide Nature Damage

Throughout the entire Siege Phase, this ability will deal approximately 75 k DPS to each player. Since this already requires a significant amount of base HPS, it is all the more important to properly manage avoidable sources of damage.

Ability: Shock Pulse

Every 15 s | Raid-wide Nature Damage

Shock Pulse deals about 450,000 damage and knocks you back violently until you hit an obstacle. It is recommended to plan raid cooldowns and also use personal cooldowns to counter this.
This ability occurs three times during the Siege Phase.

Ability: Demolisher Cannons

Sporadically | 6 y AoE

This is the same ability as in the Assault Phase, but it is used much less frequently. Because of its unpredictability, the ability is significantly more dangerous in this phase, as it can occur simultaneously with the Shock Pulse.

Ability: Explosive Tar

Twice During Siege Phase | Voids

Explosive Tar is fired twice during this phase by the boss at random locations in the arena and at locations where players are standing.
The tar itself deals approximately 50 k DPS upon contact and slows movement speed by 30 %.
If a player being pursued by the Cutter Laser (see below) steps into the tar, a Tar Explosion will occur that deals approx. 450,000 raid-wide damage and will likely result in a wipe.

Ability: Cutter Laser

Three Times During Siege Phase | Pursuing Laser

The Cutter Laser during the Siege Phase is cast three times at approx. 12-second intervals and chases a player. That player should immediately move away from other players, avoid running into the laser, and also avoid dragging the laser through the tar, as this will otherwise trigger a raid-wide explosion dealing 450,000 damage, which will likely result in a wipe.
The Cutter Laser is signaled by a debuff and the typical “tracking eyes” above your character. A boss mod of your choice should also alert you, of course.

Ability: Crawler Mines

At 30 and 50 s | 3 Clickable Mines | Physical Damage

This is the same ability as during the Assault Phase. Once again, the tanks trigger the mines. They appear near players, so don't stray too far from the group before the mines arrive.

Heroic Ability: Mortar Barrage

Twice During Siege Phase | Untargeted Ground AoE (8 y)

The Mortar Barrage occurs for the first time immediately after the first Shock Pulse during the Siege Phase and fires mortars at random locations around the boss, signaled by a Mortar Blast on the ground.
This is the ability from the Assault Phase, except that it is cast extremely rapidly in succession, about three times per second for a duration of about 15 seconds, which would require a tremendous amount of dodges. This ability is bypassed by default (see Siege Phase breakdown).
However, if you want to stay close to the boss during the Siege Phase, you’ll likely need to factor in some additional incoming damage here.

So, during the Siege Phase, you’ll be dealing with a number of abilities that need to be handled within the single minute it lasts.
The biggest problem is the Mortar Barrage, which makes staying near the boss extremely difficult due to the sheer number of impacts. You can see this in the screenshot below.

Due to the Mortar Barrage chaos around the boss, a strategy has emerged where you don’t stay near the boss during the Siege Phase and therefore avoid dealing damage to the boss during this phase. Otherwise, you’d have to find a good position so you aren’t constantly knocked back by the Shock Pulses and dodge the numerous voids.
To avoid the danger of this phase, gather at the spot shown in the following screenshot before the first shockwave. It’s best to check out the spot in our kill video starting at 2:20. After the Shock Pulse, you’ll land at the spot shown in the screenshot above.

Make sure no one is standing near the marker beforehand, or the tar might appear there. In the screenshot above, the tar makes the blue marker inaccesible, which is why the Barrier is placed slightly behind it. After you’re pushed back, the Mortar Barrage begins, and you’ll be far enough away from it. During this phase, the following order of abilities will occur.

• 0:00 The Siege Phase begins. Seismic Activity (unavoidable AoE damage throughout the phase) starts damaging your players. You're still located next to the boss.
• 0:07 Tar (1) gets sprayed onto the ground. Don't stand next to the world marker to keep it free from tar!
• 0:19 The Shock Pulse (1) kicks your raid away. Assign cooldowns to be placed at the world marker. From here on, you'll be in the eastern part of the arena.
• 0:22 The Mortar Barrage (1) starts, but since it's only around the boss, and you're far away, you don't need to dodge.
• 0:26 Cutter Laser (1). Because you've changed your location after the Tar (1), there shouldn't be any tar near you.
• 0:30 Three Crawler Mines (1) spawn.
• 0:30 Shock Pulse (2). Use Cooldowns and come together right before it.
• 0:45 Cutter Laser (2). Tar (2). Crawler Mines (2). Shock Pulse (3). This all happens within 5 seconds. Also use personal cooldowns alongside raid-wide cooldowns.
• 0:53 Mortar Barrage (2). As with the first one, you're not affected by it.
• 0:56 Cutter Laser (3).
• 1:03 The boss will start running towards your tank, who will then position the boss the same way as in the first Assault Phase at the start of the boss fight.

You’ll probably have to play through this phase a few times to get the hang of it. The beginning of the phase is calm, but starting at the 45-second mark in the list above, things start happening very quickly, one after another. Spread out slightly throughout the entire phase due to the random AoE damage of the Demolisher Cannons and the Cutter Laser (8 y), but still try to make the most of any ground healing effects as well as you can. Save your cooldowns for the Shock Pulses; experience shows that this is where most players die. Gather at a world marker shortly before they hit and spread again afterwards. Personal immunities work very well for the third Shock Pulse, because all abilities are active at the same time there.
Three-minute cooldowns are always available at the same point throughout the entire fight, so you can maintain the same timing in every run of each phase.

Kill Video

This video is our first kill from October 21, 2013, as seen from our Brewmaster's perspective.

Class Tips: Brewmaster

For your talents, choose Dampen Harm (because of the Crawler Mines) and Xuen, since it’s a pure single-target fight.
During the Assault Phase, the first tank swap must occur at two stacks, and thereafter always at three, otherwise you will run into problems with the Crawler Mines. If you intercept these, keep Shuffle active whenever possible. Otherwise, the following abilities are useful for the Crawlerg Mines: Guard, Dampen Harm, and Fortifying Brew, which you can use as needed, especially if you don't have full health and need to detonate the next mine. Using Expel Harm, you can help your healers get you back to full health quickly. Avert Harm in combination with Zen Meditation are well-suited to reducing group damage during the first Shock Pulse.

⚠️ Warning: Possible Cutter Laser Bug Do not use Zen Meditation if someone is currently being targeted by the Cutter Laser during the Siege Phase. This can result in you receiving the Cutter Laser debuff (300 k damage per second) for the entire fight, which will almost certainly lead to death. Place your statue again after the Siege Phase if it despawned.

Class Tips: Rogue

Laser Burn can and should be removed using Cloak of Shadows to relieve the healers.
It can also be used to prevent the damage and knockback of the Shock Pulse.
Since you do not attack during the Siege Phase, Feint is mandatory there at all times.
As mentioned in the ability description above, the Crawler Mines can be triggered by talenting Elusiveness in combination with Glyph of Cloak of Shadows, but it's best to leave that to other classes.
Especially if you're Combat, you can think about talenting Leeching Poison, since you'll often be hit by boss abilities during Killing Spree and this allows you to provide a large portion of your own healing.
A Feint before every Killing Spree (with Elusiveness) is also a good strategy.

Class Tips: Priest (Discipline)

In this fight, players will take damage from all sorts of sources. Make sure to dodge as many attacks as possible, so you don't have to worry about yourself as well. When a tank is triggering the mines, you can pull him directly to the next mine using Leap of Faith; this makes it easier for them to trigger the mines within the time limit. Always give them a Shield beforehand.
Depending on how you're positioned, choose Cascade or Divine Star. However, Cascade is usually the better choice, since you never really stand together. Before the first Shock Pulse, you should use Spirit Shell and use your Barrier. Use Cascade just before the next Shock Pulse (0.5 to 1 second) so that it can take effect immediately after the damage comes in.
Prayer of Mending is very powerful here. Use it on cooldown; Glyph of Prayer of Mending is also recommended.