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Blackwing Descent

Blackwing Descent

Raid GuideRetail

Boss abilities and loot tables from Blizzard's own journal, boss by boss.

Nefarian and his warped attempts to create a new breed of dragon were thought to be defeated after his death in Blackwing Lair. Yet tales have emerged that his father, Deathwing, has reanimated Nefarian and set him to work in Blackwing Descent. The gruesome experiments being conducted there are feared to be on a level of wickedness far surpassing Nefarian's previous crimes against nature.

Written notes for this instance are a later milestone. Everything on this page comes from Blizzard's journal data.

Expansion
Cataclysm
Minimum Level
35
Modes
10 Player, 25 Player, 10 Player (Heroic), 25 Player (Heroic)

Bosses

1. Omnotron Defense System

The Omnotron Defense System was once touted as the Dark Iron dwarves' greatest technological marvel. When Nefarian arrived in Blackwing Descent, he repurposed the run-down system to annihilate anyone intruding on his laboratories.

Abilities

  • Primary Defense Matrix

    The four dwarven golems share a health pool and two are active at any given time. When a golem activates, it possesses 100 energy to use for its abilities. Once the golem's energy reaches 50, it gains a defensive shield and a new golem activates. Once the golem's energy reaches 0, the golem deactivates and another golem activates.

  • Arcanotron

    Arcanotron summons a Power Generator under a random player. The field increases the damage dealt by 50% for all units within 5 yards and restores 0 mana every 0.5 seconds. The Power Generator lasts 1 min.

  • Electron

    Electron designates a random player as a Lightning Conductor, causing them to inflict 1,925 Nature damage to allies within 8 yards every 2 sec., for 10 sec.

  • Magmatron

    Magmatron strikes everyone in the room for 0 Fire damage every 1 sec. for 4 sec.

  • Toxitron

    Toxitron fires a Chemical Bomb at a random player, creating a Chemical Cloud at their location. The cloud increases the damage taken by any unit in the cloud.

Loot

Showing the first 20 of 25 items. Open The Boss Page

2. Magmaw

Magmaw is a colossal lava worm summoned from the Firelands centuries ago by Ragnaros' Dark Iron servitors. Nefarian largely considers Magmaw a worrisome pest, but has grown fond of feeding the beast his failed experiments... and servants.

Abilities

  • Magma Spit

    Magmaw spits a volley of magma at three random players, inflicting 0 Fire damage to each player.

  • Pillar of Flame

    Magmaw barrages the ground beneath a random player's feet with globs of roiling magma. The impacts sunder the ground, causing eruptions that knock players within 5 yards high into the air and inflicting 0 Fire damage every 0.5 sec. The impacts also spawn multiple Lava Parasites.

  • Lava Spew

    Magmaw spews a stream of molten lava across all players, inflicting 0 Fire damage every 2 sec for 6 sec.

  • Molten Tantrum

    If Magmaw is ever unable to reach an enemy with his melee attack, he enters a frenzy. Magmaw then launches Magma Spit at all players and increases his Fire damage dealt by 100% for 10 sec. This effect stacks.

  • Mangle

    Magmaw picks up his current target in his jaws, then bites down. The crushing force inflicts 0 damage every 2 sec. Magmaw crushes his target severely after 30 sec. Impaling Magmaw causes him to release his grasp on the target.

  • Massive Crash

    Magmaw brings his entire body smashing down on one half of the room, inflicting 0 damage and stuns all players caught beneath him for 3 sec. The Massive Crash also briefly stuns Magmaw, allowing two players to leap onto his pincers.

Loot

Showing the first 20 of 27 items. Open The Boss Page

3. Atramedes

Atramedes, or Experiment 25463-D, is a failed attempt to bestow enhanced senses on a black dragon whelp. The toxic salve applied to the broodling robbed him of sight, forcing him to rely on sound and smell for survival. A tragic story... if Atramedes weren't so evil.

Abilities

  • Sound

    Atramedes is blind and hunts based on sound. Players begin the battle with 0 Sound and gain Sound when taking damage. Atramedes channels Devastation on targets with 100 Sound and quickly kills them. Using an Ancient Dwarven Shield resets the Sound on all players.

  • Ancient Dwarven Shields

    Ten Ancient Dwarven Shields are positioned around the room. Any player can strike one of the shields and cause a Resonating Clash. This interrupts Atramedes' casting, resets the Sound on every player to zero, and gives Atramedes a case of Vertigo. When Atramedes recovers from Vertigo, he destroys the shield.

  • Grounded Abilities

    Atramedes begins the fight on the ground.

  • Airborne Abilities

    Atramedes periodically flies up into the air during the fight, raining destruction down on his enemies from above.

  • Obnoxious Fiend

    Lord Victor Nefarius meddles in the fight, randomly opening portals and allowing Obnoxious Fiends to enter the fray. Each Obnoxious Fiend jumps on the back of a random player and tries to increase that player's Sound.

Loot

Showing the first 20 of 24 items. Open The Boss Page

4. Chimaeron

Terrifying. Ugly. Evil. Kill it.

Abilities

  • Pip Quickwit

    Pip Quickwit, gnome explorer extraordinare, has been captured by Nefarian and cannot be freed from his cage until Chimaeron is slain. A player can talk to Pip before the fight begins to convince him to activate his Bile-O-Tron, which helps keep the raid alive. Activating the Bile-O-Tron also wakes Chimaeron.

  • Stage One: Truly Something to Behold

    Chimaeron attacks his current target with Break and Double Attack, while continually spraying Caustic Slime at the raid. He periodically casts Massacre on the raid, and his heads sometimes Feud following a Massacre.

  • Stage Two: A Horrific Creation

    At 20% health Chimaeron goes into a rage. This renders him immune to Taunt effects and greatly decreases healing done by players.

Loot

Showing the first 20 of 24 items. Open The Boss Page

5. Maloriak

The human Malory was a bright young alchemist until he was kidnapped by Nefarian and fused with the corpse of a dragonspawn. The result-Maloriak-is a bumbling minion who possesses only a dull glimmer of his former intelligence.

Abilities

  • Stage One: Mustn't Fail Again!

    Periodically, Maloriak throws various vials into his cauldron, causing different effects. The first two Vials will be Red then Blue or Blue then Red, followed by Green, then the cycle repeats.

  • Stage Two: Unpredictable Results

    At 25% remaining health, Maloriak stops throwing vials into the cauldron. He deals more melee damage, gains a new set of abilities, and immediately frees all remaining experiments in the growth chambers.

Loot

Showing the first 20 of 28 items. Open The Boss Page

6. Nefarian's End

Deathwing's son, Nefarian, gained infamy for his horrifying efforts to create chromatic dragons from the essences of Azeroth's various dragonflights. After his death in Blackwing Lair, he was reanimated and charged by Deathwing to continue his insidious endeavors.

Abilities

  • Electrocute

    Throughout the battle, Nefarian electrocutes the entire raid every time he loses 10% of his health. Electrocute generates a massive crackle of lightning that inflicts 0 Nature damage on all players.

  • Stage One: Rise, Sister!

    Nefarian reveals the undead form of his sister, Onyxia, and the two dragons attack the raid.

  • Stage Two: Curse You, Mortals!

    When the players kill Onyxia, Nefarian takes to the air and fills the room with magma except for three platforms. Nefarian then summons a Chromatic Prototype upon each of the platforms.

  • Stage Three: You Simply Will Not Die!

    After the players kill all the Chromatic Prototypes, the lava subsides, and Nefarian lands to finish the battle.

Loot

Showing the first 20 of 34 items. Open The Boss Page

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Data from patch 12.1.0. Game data provided by Blizzard Entertainment through the Battle.net API.