This page covers healer-focused strategies for the Blackrock Depths - Lower dungeon. While it's tailored for healers, other roles may also find the information useful. If you have any suggestions or feedback, you can leave a comment below or tweet @PrestonDvorak.

This guide has been updated and maintained based on my own experiences as well as Dungeon Journal information. I'll continue to update it as-needed.

Best for players level 52-60.

While it's technically possible to access all of Blackrock Depths at one time, most players opt to do one of two sections. The Lower or Detention Block section is the first of the two.

This section allows players to obtain the Shadowforge Key by completing the Dark Iron Legacy quest. The key is used to unlock doors to access other parts of Blackrock Depths.

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 Bosses

Below are guides for the bosses in Blackrock Depths - Lower, including their abilities, healer notes, and addon settings.

High Interrogator Gerstahn

• Interrupt Mana Burn to prevent the mana drain effect.
• Dispel Shadow Word: Pain (magic) to prevent the damage over time.
• Purge Shadow Shield to remove the damage absorption effect.
• Fears all players with Psychic Scream.

 Healing Notes

• Be aware of player positioning after Psychic Scream, some players may end up our of range or line of sight.

 Debuffs to Track

• Minor: Shadow Word: Pain (dispel, magic)
• Buffs to Purge: Shadow Shield

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Lord Roccor

• Dispel Flame Shock (magic) to prevent the damage over time.
• Can interrupt player casts with Earth Shock.

 Healing Notes

• Be aware of trash mobs nearby and patrolling through the area.

 Debuffs to Track

• Minor: Flame Shock (dispel, magic)

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Houndmaster Grebmar

• Purge Bloodlust to remove the increased attack speed effect.
• Stay at least 5-yards away to avoid the interrupt from Pummel.
• Reduces attack power of nearby players with Demoralizing Shout.

 Healing Notes

• Be aware of trash mobs nearby and patrolling through the area.

 Debuffs to Track

• Buffs to Purge: Bloodlust

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Ring of Law

The Ring of Law features a pool of bosses from which one is chosen at a time in a gauntlet style event. Below are the possible bosses.

• Gorosh the Dervish
  • The tank will be dealing with Mortal Strike, receiving 50% less healing for the duration of the effect.
  • Purge Bloodlust to remove the increased attack speed effect.
  • Stay at least 5-yards away during Whirlwind to avoid the heavy damage.
• Grizzle
  • Dispel Frenzy (enrage) to remove the increased attack speed and damage dealt.
  • Stay at least 20-yards away to avoid Ground Tremor.
• Eviscerator
  • Applies Vicious Rend to the tank.
  • Interrupt Shadow Bolt Volley to prevent the damage dealt to all players.
  • Is immune to magic damage while Anti-Magic Shield is active.
• Ok'Thor the Breaker
  • Interrupt or dispel Polymorph (magic).
  • Interrupt Arcane Explostion if possible to prevent the light damage dealt to all players.
  • Dispel Slow (magic) to remove the reduced attack and casting speed effect.
• Anub'Shiah
  • Dispel Curse of Tongues (curse) to remove the reduced cast speed effect.
  • Dispel Curse of Weakness (curse) to remove the reduced physical damage dealt effect.
  • Purge Demon Armor to remove the increased armor and resistance effect.
  • Targets random players with Banish, making them immune to damage, healing, and spell effects.
  • Targets random players with Enveloping Web, preventing them from moving or casting spells.
• Hedrum the Creeper
  • Dispel Baneful Poison (poison) to prevent the damage dealt over time.
    • If no Poison dispel is available, when affected move at least 10-yards away from other players.
  • Dispel Paralyzing Poison (poison) to remove the stun effect.
  • Immobilizes all players with Web Explosion.

 Healing Notes

• Anub'Shiah: Can be difficult depending on which players are affected by Enveloping Web and Banish at any one time.
• Overall, the bosses aren't particular difficult if interrupts and dispels are handled.

 Debuffs to Track

• Major: Mortal Strike, Polymorph (dispel, magic), Curse of Tongues (dispel, curse), Curse of Weakness (dispel, curse), Slow (dispel, magic), Paralyzing Poison (dispel, poison)
• Minor: Vicious Rend, Baneful Poison (dispel, poison)
• Enrages to Dispel: Frenzy
• Buffs to Purge: Bloodlust, Demon Armor

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Bael'gar

• Applies Magma Splash to the tank, dealing light damage over time.
• Avoid the impact location of Summon Spawn of Bael'Gar, spawns a Spawn of Bael'Gar.

 Healing Notes

• Be sure Spawns of Bael'Gar are kept under control.

 Debuffs to Track

• Minor: Magma Splash

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Lord Incendius

• Immune to most bleed effects and poisons.
• The tank will be dealing with Mighty Blow.
• Dispel Curse of the Elemental Lord (curse) to remove the reduced fire resistance effect.
• Avoid the impact location of Fiery Burst.
• Avoid the impact location of Fire Storm and the resulting fire patch.

 Healing Notes

• The fight can get out of control without a Curse dispel for Curse of the Elemental Lord, but if players are dodging spells properly you should be fine.
• The tank needs to be careful not to get knocked off the platform by Mighty Blow.

 Debuffs to Track

• Major: Curse of the Elemental Lord (dispel, curse)

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Fineous Darkvire

• Deals extra damage to the tank with Holy Strike.
• Interrupt Holy Light to prevent the healing.
• Purge Seal of Reckoning to prevent the healing.
• Stay at least 5-yards away to avoid the interrupt from Kick.
• Grants nearby enemies reduced physical damage taken with Devotion Aura.

 Healing Notes

• The tank will be taking significant damage throughout the encounter.
• Be aware of nearby enemies if your group elected not to clear all the trash mobs.

 Debuffs to Track

• Buffs to Purge: Seal of Reckoning

 Trash Mobs

Below are notes for the trash mobs in Blackrock Depths - Lower. Blackrock Depths - Lower has a relatively open layout in most places. The trash below is ordered as if you're completing the bosses in the order they're listed above.

• Throughout the instance, Humanoid enemies will attempt to run away in fear when at low health. Be prepared to slow and snare them.

Entrance thru High Interrogator Gerstahn

• • Anvilrage Footman
    • Stay at least 5-yards away to avoid the interrupt from Kick.
  • Anvilrage Guardsman
    • Can Disarm the tank, possibly leading to threat generation issues.
    • Applies Sunder Armor to the tank, reducing armor.
  • Anvilrage Overseer
    • Increases the attack speed of nearby enemies with Haste Aura.
  • Anvilrage Warden
    • Stay at least 5-yards away to avoid the interrupt from Shield Bash.
    • Targets random players with Hooked Net, dealing light damage and rooting them in place.
  • Blazing Fireguard
    • Interrupt Scorch to prevent the damage dealt to the tank. 
    • Dispel Immolate (magic) to prevent the damage over time.
  • Bloodhound
    • Applies Rend to the tank, dealing light damage over time.
    • Interrupt Dire Growl to prevent the reduced strength and agility effect.
  • Twilight's Hammer Torturer
    • Dispel Wracking Pains (curse) to remove the periodic stun effect.
    • Dispel Shadow Word: Pain (magic) to prevent the damage over time.

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High Interrogator Gerstahn thru Lord Roccor/Houndmaster Grebmar

• This area contains Anvilrage Footman, Anvilrage Guardsman, and Bloodhounds, detailed above.
• Fireguard
  • Interrupt Fireball to prevent the damage dealt to the tank.

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Houndmaster Grebmar thru Ring of Law

• During the first wave of the Ring of Law, you can fight the following trash mobs:
  • Borer Beetle
    • Applies Pierce Armor to the tank, greatly reducing armor.
    • Dispel Putrid Enzyme (disease) to remove the increased nature and shadow damage taken effect.
  • Burrowing Thundersnout
    • Interrupt Lizard Bolt to prevent the damage dealt to the tank.
    • Dispel Disjunction to remove the increased spell damage taken.
    • Stay at least 10-yards away to avoid Thunder Clap (dispel, magic).
  • Cave Creeper
    • Dispel Creeper Venom (poison) to removed the increased physical damage taken effect.
    • Dispel Poison (poison) to prevent the light damage over time.
  • Dark Screecher
    • Dispel Aural Shock (curse) from casters to remove the reduced casting speed effect.
    • Stay at least 10-yards away to avoid the silence from Sonic Burst (dispel, magic).
  • Deep Stinger
    • Dispel Barbed Sting (poison) from melee DPS to remove the reduced attack speed effect.
    • Dispel Slowing Poison (poison) from melee DPS to remove the reduced attack speed effect.
    • Hits the tank and the player closest to the tank with Cleave.
  • Dredge Worm
    • Interrupt or dispel Venom Spit (poison) to prevent the light damage over time.
    • Dispel Dredge Sickness (disease) to remove the reduced attributes effect.
    • Dispel Poison (poison) to prevent the light damage over time.

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Ring of Law thru Bael'gar

• This area includes Blazing Fireguards, and Bloodhounds, detailed above.
• Anvilrage Medic
  • Interrupt Prayer of Healing to prevent the healing on all nearby enemies.
  • Interrupt Heal to prevent the healing.
• Anvilrage Officer
  • The tank will be dealing with Backhand.
  • Interrupt Holy Light to prevent the healing.
  • Immune to damage while Divine Shield is active.
• Anvilrage Soldier
  • Hits the tank and the player closest to the tank with Cleave.

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Bael'gar thru Lord Incendius

• This area includes Anvilrage Guardsman, Anvilrage Medic, Anvilrage Officers, Anvilerage Soldiers, and Blazing Fireguards, detailed above.
• Doomforge Arcanasmith
  • Interrupt Arcane Explosion to prevent the light damage dealt to all players.
• Doomforge Craftsman
  • Avoid the impact location of Bomb.
• Doomforge Dragoon
  • Hits the tank and the player closest to the tank with Cleave.
  • Stay at least 10-yards away from other players to mitigate the damage dealt by Explosive Shot.
• Fireguard Destroyer
  • Deals moderate damage to all players with Fireball Volley.
• Shadowforge Citizen
  • Applies Sunder Armor to the tank, reducing armor.
  • Hits the tank and the player closest to the tank with Cleave.
  • Interrupt Heal to prevent the healing.
  • Stay at least 10-yards away to avoid Frost Nova (dispel, magic).
• Shadowforge Peasant
  • Can Disarm the tank, possibly leading the threat generation issues.
  • Interrupt Heal to prevent the healing.
  • Avoid the impact location of Throw Dynamite.
• Twilight Bodyguard
  • The tank will be dealing with Fist of Ragnaros.
  • Purge Seal of Sacrifice to remove the reduced damage taken effect.
  • Stay at least 5-yards away to avoid the interrupt from Pummel.
• Twilight Emissary
  • Interrupt Arcane Explosion to prevent the light damage dealt to all players.
  • Purge Fury of Ragnaros to remove the increased damage dealt effect.
  • Avoid the location of Blizzard.
  • Stay at least 10-yards away to avoid Frost Nova (dispel, magic).
• Weapon Technician
  • Stay at least 10-yards away from other players to mitigate the damage dealt by Explosive Shot.
  • Deals moderate damage to up to three players with Multi-Shot.

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Lord Incendius thru Fineous Darkvire

• This area includes Doomforge Craftsman, detailed above.
• Warbringer Construct
  • The tank will be dealing with Skull Crack.

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 Trash Debuffs to Track

• Major: Sunder Armor, Wracking Pains (dispel, curse), Pierce Armor, Putrid Enzyme (dispel, disease), Creeper Venom (dispel, poison), Sonic Burst (dispel, magic), Barbed Sting (dispel, poison), Dredge Sickness (dispel, disease), Backhand, Sunder Armor, Fist of Ragnaros
• Minor: Immolate (dispel, magic), Rend, Shadow Word: Pain (dispel, magic), Thunder Clap (dispel, magic), Poison (dispel, poison), Venom Spit (dispel, poison), Frost Nova (dispel, magic), Frost Nova (dispel, magic)
• Enrages to Dispel: None
• Buffs to Purge: Seal of Sacrifice, Fury of Ragnaros

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