Blast Furnace

The Blast Furnace
Gender	Male
Race	Fire fury (Elemental)
Level	?? Elite
Reaction	Alliance Horde
Location	The Blast Furnace, Blackrock Foundry
Status	Killable
Blackrock Foundry
Gruul; Oregorger; Blast Furnace; Hans'gar and Franzok; Flamebender Ka'graz; Kromog; Beastlord Darmac; Operator Thogar; Iron Maidens; Blackhand;	(lore); (lore); (lore); (lore); (lore); (lore); (lore); (lore); (lore); (lore);
	Loot

"Heart of the Mountain" redirects here. For the Blackrock Depths object, see Heart of the Mountain (object).

For other uses, see Blast Furnace (disambiguation).

The Blast Furnace is the third encounter in Blackrock Foundry, and the final encounter of the Slagworks wing.

Adventure Guide[]

The Blackrock clan’s unique ability to smelt the black ore, a substance so dense that ordinary flame does not even soften it, has always been their most closely-guarded secret. Deep within the Foundry, their furnace contains a primal force as old as Draenor itself, raging within the confines of its prison as it emanates a preternatural heat.

Objective of[]

Slagworks

Overview[]

Heart of the Mountain (Blast Furnace) — Heart of the Mountain.

The objective of this encounter is to destroy the Foundry's massive furnace. Players must first disable the Blast Furnace's Heat Regulators, which will release the Heart of the Mountain, a blazing fire Fury that powers the furnace. Primal Elementalists then join the fight and channel beams to control the raging Fury. Once the Primal Elementalists have fallen, the Heart of the Mountain is unleashed and must be dealt with directly.

Damage Dealers[]

Furnace Engineers attach bombs to random targets. Detonate these bombs near a Heat Regulator to damage them.
Defeat Slag Elementals near Primal Elementalists to temporarily disrupt their protective shield.
Interrupt Firecallers' Cauterize Wounds.

Healers[]

Players in the vicinity of Foreman Feldspar suffer Fire damage as long as they are close to him.
Foreman Feldspar targets random players with his Pyroclasm ability.
Every time the Heart of the Mountain reaches 100 Energy, he will cast Blast.
Slag Elementals pick targets at random to fixate on and attack.

Tanks[]

Position enemies so that they are not protected by Security Guards' Defense ability.
Slag Elementals fixate on random players, and cannot be taunted.
When facing the Heart of the Mountain, take turns tanking in order to manage your stacks of Tempered and Heat.

Abilities[]

Phase 1 - Sabotage[]

Players must disable the Heat Regulators located on each side of the Blast Furnace to disable it.

The Blast Furnace
- Blast — The Blast Furnace periodically unleashes a burst of heat upon the whole room. All players suffer 74000 to 86000 Fire damage.
Furnace Engineer
- Electrocution — The caster fires a bolt of electricity at a random enemy that inflicts 23400 to 24600 Nature damage. The electricity will jump to up to 2 other targets within 5 yards of the initial target.
- Repair — The caster attempts to repair a nearby Heat Regulator for 2% of its maximum health.
- Bomb — The caster attaches bombs to random enemies. After 15 sec the bombs will detonate.
- Drop Lit Bombs — The caster drops their sack of bombs. The force of dropping to the ground causes them all to arm; they will explode shortly after being picked up. If all the bombs are taken out of the sack, the sack will disappear. Otherwise the sack will explode after 15 sec.
Bellows Operator
- Loading — Periodically increases the heat level of the Blast Furnace by 1.
- Get in the Fight! — In Mythic Difficulty, the Bellows Operators will stop operating the bellows of the furnace and engage players in melee combat after reaching 50% health remaining.
Security Guard
- Defense — The caster provides protection for their nearby allies, preventing nearly all damage.
- Slay Elemental — The caster strikes the target, disabling any protection their elemental nature would normally provide and causing the target to take an additional 50% more damage for 20 sec. Only works on Slag Elementals.
Foreman Feldspar
- Pyroclasm — The caster hurls a massive glob of pyroclastic sludge at a random target for 46250 to 53750 Fire damage.
- Rupture — The ground beneath the target's feet rips open, revealing pyroclastic flows that inflict 40000 Fire damage to all players in the vicinity every second.
- Hot Blooded — Foreman Feldspar's very presence burns his enemies with Fire damage.
- Melt Armor — The caster lashes forward with their molten gauntlets, inflicting 55500 to 64500 Fire damage and melting the victim's armor. Further instances of this attack received within 30 sec inflict 30% more damage.

Phase 2 - The Heart Exposed[]

The Heart of the Mountain escapes from the Blast Furnace! Primal Elementalists join the fight in an effort to keep the Heart of the Mountain from destroying everything.

The Blast Furnace
- Blast — The Blast Furnace periodically unleashes a burst of heat upon the whole room. All players suffer 74000 to 86000 Fire damage.
- Slag Pool — The Slag Pool continues to heat up the Heart of the Mountain as long as it remains in the area.
- Cooling Down — When the Heart of the Mountain exits the Blast Furnace it loses heat.
Primal Elementalist
- Damage Shield — The caster raises a shield of elemental forces, making them immune to all damage.
  - Shields Down — Primal Elementalists are vulnerable to damage when their Damage Shield has been removed.
- Reactive Earth Shield — The Reactive Earth Shield will heal the target after 8 sec.
Firecaller
- Cauterize — The caster seals the target's wounds with flames, cauterizing them and healing the target for 10% of their maximum health. Players healed in this way are healed for 1/10th this value.
- Lava Burst — The caster hurls a massive glob of lava at a random target for 50875 to 59125 Fire damage.
- Volatile Fire — Afflicts random enemies with a seed of Volatile Fire that will explode after 8 sec. When the seed explodes, it inflicts 92500 to 107500 Fire damage to all enemies within 8 yards of the explosion.
- Erupt — The caster causes lava underneath the target Slag Elemental to rise up out of the ground, heating them up. The Slag Elemental is energized to full.
Slag Elemental — Slag Elementals will go Dormant and remove the Damage Shield of any nearby Primal Elementalist when they are reduced to 1 hitpoint. While Dormant, the Fury's Blasts will restore 20 Energy. When the Slag Elemental reaches 100 Energy they will revive.
- Burn — The caster inflicts 27750 to 32250 Fire damage to their current target.
- Fixate — Slag Elementals fixate on a random target, focusing their spells on the victim.
- Slag Bomb — Upon reaching zero health remaining, the Slag Elemental explodes for 92500 to 107500 Fire damage to all enemies within 8 yards and goes Dormant.
- Hardened Slag — Hardened Slag is impervious to nearly all damage.
Security Guard
- Defense — The caster provides protection for their nearby allies, preventing nearly all damage.
- Slay Elemental — The caster strikes the target, disabling any protection their elemental nature would normally provide and causing the target to take an additional 50% more damage for 20 sec. Only works on Slag Elementals.

Phase 3 - Freedom![]

With all of the Primal Elementalists defeated, the Heart of the Mountain attacks everything in site.

Heart of the Mountain
- Blast — The Blast Furnace periodically unleashes a burst of heat upon the whole room. All players suffer 74000 to 86000 Fire damage.
- Tempered — Exposure to Heat from the Heart of the Mountain's attacks gradually increases damage taken from Heat. Tempered will only increase its efficacy when exposed to greater Heat levels than your current Tempered level and any time Heat is initially applied to you.
- Heat — Heats up the victim's arms and armor. This heat inflicts 20000 Fire damage every second for each application and is increased by the victim's Tempered level.
- Melt — The caster heats the floor under a random enemy. Players entering the affected area suffer 50000 Fire damage every second.

Strategy[]

Please add any available information to this section.

Loot[]

Raid Finder		Normal/Heroic/Mythic
Item	Type	Item	Type
[Spire of Pyroclastic Flame]	Agility staff	[Crescent of Living Magma] (H · M)	Strength two-hand axe
[Flickering Lantern Wisp]	Caster off-hand	[Mouth of The Fury] (H · M)	Crossbow
[Pyroclastic Hood]	Cloth helm	[Blast-Proof Cowl] (H · M)	Mail helm
[Spaulders of Tempered Fury]	Leather shoulders	[Lava-Dipped Greathelm] (H · M)	Plate helm
[Chest of Heaving Bellows]	Mail chest	[Engineer's Grounded Gorget] (H · M)	Agility necklace
[Bracers of Searing Heat]	Cloth bracers	[Feldspar's Control Choker] (H · M)	Spirit necklace
[Gauntlets of Electrocution]	Plate gloves	[Bracers of Spattered Steel] (H · M)	Cloth bracers
[Grips of the Ruptured Furnace]	Mail gloves	[Fleshmelter Bracers] (H · M)	Plate bracers
[Raging Pyroclasm Leggings]	Leather leggings	[Furnace Tender's Treads] (H · M)	Leather boots
[Firecaller's Scorched Seal]	Tank ring	[Slagstomper Treads] (H · M)	Mail boots
[Furyheart Talisman]	DPS caster trinket	[Blast Furnace Door] (H · M)	Tank trinket
[Ebonflame Leggings]	Cloth leggings	[Elementalist's Shielding Talisman] (H · M)	Spirit trinket
[Sootfur Legwraps]	Leather leggings	[Leggings of the Iron Conqueror] (H · M)	Armor token
[Ashlink Legguards]	Mail leggings	[Leggings of the Iron Protector] (H · M)	Armor token
[Blacksteel Legplates]	Plate leggings	[Leggings of the Iron Vanquisher] (H · M)	Armor token
		[Heart of the Fury]	Quest item

Related Achievements[]

Quotes[]

Intro: Blackhand yells: Guards! Intruders are meddling with the Blast Furnace!

Foreman Feldspar[]

Aggro: Protect the furnace at all costs!

Bellows Operator

Get those billows pumping!
Turn up the heat boys, we'll sweat 'em out!

First Heat Regulator Destroyed: Foreman Feldspar yells: Call in more security!; Blackhand yells: The machinery is damaged. Keep those scum from sabotaging the furnace!

Abilities

I will crush you!
Die scum!

Killing a player

Weak!
Pathetic!

Wipe: Can't take the heat? Get out of the furnace!

Death: awww...aaaaggg...

Unused quotes

Smash!
The Fury has broken free!

Primal Elementalist[]

Phase 2: The Heart Exposed: Blackhand yells: The furnace is overheating! Fools! If the fury breaks free, our work will be ruined!; Primal Elementalist yells: The fury has broken free!; Primal Elementalist yells: Quick, get it under control!; Primal Elementalist yells: Warlord, we have it under control.

Phase 3: Freedom!: It... is free. Warlord, we have failed...

Heart of the Mountain[]

Phase 3: Freedom!: Heart of the Mountain yells: Freeeedommmmm!; Blackhand yells: A small victory, but now you will perish in the flame that burns at the heart of Blackrock!

Heat Level rising

I will reduce you all to ashes!
My flames will lick the flesh from your bones!

Blast: SUFFER!

Melt: Drown in fire!

Killing a player

I consume all!
Die!
Burn!

Wipe: I will burn this mountain unto ash!

Death: Heart of the Mountain yells: My fire is... Exting..uished.; Blackhand yells: What happened to my Furnace? Where are my guards? Shut these intruders down!

Unused quote: Inferno!

Trivia[]

Heart of the Mountain is voiced by Richard Green.

Speculation[]

This article or section includes speculation, observations or opinions possibly supported by lore or by Blizzard officials. It should not be taken as representing official lore.

Several of the orc mobs during the encounter are green-skinned or from the Dragonmaw clan. The people staffing the Blast Furnace could be True Horde remnants.

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