Hey guys I’m Mezzy and welcome to this warlords of draenor raiding guide. Today we’ll be taking a look at The Blast Furnace in Heroic Blackrock Foundry. These tactics also apply to the normal version.
This is a 3 phase encounter in which the first two phases matter most. If you can deal with them efficiently you should have no trouble with phase 3.
The goal of phase 1 is to disable the 2 Heat Regulators on either side of the blast furnace. The heart of the mountain in the blast furnace will cast blast regularly, dealing aoe damage. It’s energy will increaes over time, which decreases the cooldown of blast, meaning if you don’t get out of phase 1 quickly enough you’ll get overwhelmed.
In phase 1 you’ll have to deal with a mini boss and a bunch of adds that will keep spawning throughout the phase. So let’s start with the engineers, these are the key to destroying the heat regulators on the sides of the blast furnace. The engineers will attach bombs onto random players, which will explode after 10 seconds. This explosion also deals damage to the heat regulators and is the only way to destroy them. When a bomb is attached to you, you can use the extra action button to detonate the bomb before the timer ends. So when you get a bomb, run it over to the heat regulator and let it detonate.
You’ll want to kill the engineers as quickly as possible because when they die they will also drop bombs allowing you to speed up the process. The bombs are the most important part of the phase so be sure to pick them up and destroy the regulators. The engineer also has a chain lightning and can repair the regulators. When they cast repair you must interrupt them as quickly as possible.
The next type of add is the Bellows Operator. These do not attack you, but instead channel loading which will increase the energy of the heart of the mountain. Because of this you will want to kill the operators as soon as they spawn.
The final type of add is the Security guard. These don’t really do much except put Defense zones on the floor. Any add standing in the zone, except for the operator, will get their damage taken reduced by 90%. So you will want to keep moving the adds out of these so you can keep killing them.
The mini boss, Foreman Feldspar, will also need to be killed. He pulses aoe damage through Hot Blooded but you will just have to heal through that. He casts Pyroclasm on random players and this can be interrupted. It does a medium amount of damage and if you have spare interupts be sure to use them. But the most important ability that he has is called Rupture, this will put a debuff on the player and after a couple of seconds will leave a lava type void zone underneath them. You want to put these off to the sides of the room so that you’ll have as much room as possible for the following phases.
They’re a lot of abilities, but in executing the fight there’s not that much you have to do. Have the entire raid start off on the left hand side to destroy that heat regulator first. Whenever there is an operator up on the right hand side have all of the ranged dps switch to it. Once the operator is dead go back to the other side.
As a rule of thumb use the following dps priority: Operators > Engineers > Guards > Foreman. Cleave as much as you can if it increases your dps because the adds will keep spawning. If you fall behind on add killing it will wipe you.
Once the regulator on the left hand side is dead, move your raid to the other side. When an operator spawns on the left hand side, let your ranged dps kill that one first. After the second regulator dies you will go into phase 2. Kill off the remaining adds and the foreman should be low on health as well at this point.
In phase 2, 4 elementalists will spawn with shields. These will each have to be removed and killed off. To remove the shield from an elementalist you will need a Slag elemental to stand on top of the elementalist. These elementals will fixate on a player and start casting burn. Whoever it targets has to stand on top of the elementalist you want to kill. Then the elemental should be interrupted when it casts burn so that it moves to the fixated player. Get the elemental to 1 health and it will explode dealing damage in an 8 yard radius. This explosion causes the elementalist’s shield to be removed and your raid should focus the elementalist. The shield will come back after a limited time so put your back into it as you really want to kill the elementalist in this small window of time.
Once an elementalist has lost health it will regularly get the reactive earth shield buff, which needs to be dispelled. If it’s not dispelled wthin 8 seconds, it will heal the elementalist. This buff will continue to appear if you do not kill the elementalist within the removal of 1 shield. So if you need a second slag elemental to explode, continue dispelling the earth shield while you’re working on the slag elemental.
Slag elementals will revive after they’ve been hit by blast from the blast furnace 4 times and more will continue to spawn, which acts as another soft enrage mechanic.
To further complicate the matter, guards will continue spawning and you’ll also have to deal with the new Firecaller adds. When firecallers are up there are 2 things you have to deal with. First of all, cauterize wounds which is another healing buff which can be dispelled, but the cast can and should be interrupted. Secondly they cast Volatile Fire on random players, after 10 seconds they will explode and deal damage to anyone within 8 yards. So if you get the Volatile Fire move out.
Again with all this information the phase seems complicated but it’s not.
– Keep the guards off of the slag elementals and elementalists so that their damage reduction doesn’t interfere.
– Interrupt slag elementals and have the fixated player stand on top of an elementalist.
– When the slag elemental reaches 1 health and explodes, switch to the elementalist and nuke it down.
– Have someone dispell the earth shield, we used a priest for this.
– Repeat this for all 4 elementalists.
– At the same time, interrupt the firecallers cauterize and kill them off.
– And finally if you get Volatile Fire move away from the rest of the group.
Once you kill off all 4 elementalists phase 3 will start. This phase is pretty straight forward, so here’s what you need to know:
– Start at the back of the room, as you’ll need the space.
– The tanks should taunt the boss off each other when the other tank reaches 2 stacks of the Heat debuff. Heat will deal more and more damage due to the Tempered debuff, which acts as a soft enrage.
– The ranged players will have to deal with the Melt debuff. Melt will cause a puddle of lava to spawn beneath the player after 6 seconds. This puddle will continue to grow, which means that your raid will have to continue moving forward through the entire room.
– When a player gets this, they should move it back into the room as much as possible. Call out to your tanks over ventrilo when they need to move forward when you start to run out of space.
You’ll want to save heroism for phase 3 and kill the heart of the mountain.
There are a lot of abilities to deal with over the course of this encounter, but in execution the fight is a lot simpler than it would first appear. It might take you some pulls though, so good luck!
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