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Blackrock Mountain · Encounter 2 · 08:00

Warchief Rend Blackhand

Encounter 2 of 5 in Blackrock Mountain. Base health 10,500.

Azeroth Survivors v0.141.0 · Checked 2026-11-05

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Boss guide

How to beat Warchief Rend Blackhand

Blackrock Mountain · Encounter 2 · 08:00 · 10,500 base HP

When it arrives

Arrives at 08:00 as encounter 2 of 5 in Blackrock Mountain.

Boss yell“Blackrock will never fall! For the true Horde!”

Previous encounter · 04:00 ← General Angerforge Next encounter · 12:00 Emperor Dagran Thaurissan →

Attack timeline

4 recorded actions for this boss, in data order. Values are stored base client parameters.

  1. 1 Frontal cone

    A cone attack in front of the boss, telegraphed for 0.9-2 s and repeated every 5-10 s where an interval is listed. The data does not give the cone's angle or range.

    Interval
    7 s
    Warning
    1.4 s

    How to handle: Use the warning to step through the boss's side or behind it; walking straight back keeps you in the cone longer. Re-enter after the telegraph resolves.

    Inferred from game data — not yet verified in game

  2. 2 Rotating line

    In-game text“Warchief Rend Blackhand's gaze sweeps the field!”

    A line sweeps around the arena; the game warns "the boss's gaze sweeps the field!". The data records a 1.8-2 s warning and a 14-20 s cycle.

    Interval
    14 s
    Warning
    1.8 s

    How to handle: Step across the line after it passes rather than running along its sweep. Keep moving with the safe side and do not cut back through the line.

  3. 3 Circle around the boss

    Boss-centered circle

    In-game text“Lava wells up around Warchief Rend Blackhand!”

    A hazard centred on the boss: the game warns "Lava wells up around the boss!" or "the boss pounds the ground!", then the marked area around it resolves. The data adds a 1.3 s warning and a 7-12 s cycle.

    Interval
    11 s
    Warning
    1.3 s

    How to handle: When the warning appears, step out of the area around the boss and wait for the hit before re-entering melee. A 7 s cycle leaves little time to finish a long cast.

  4. 4 Summon

    Add wave

    In-game text“Minions, to me!”

    The boss calls in a wave of adds; the game announces it with "Minions, to me!" or "A pack hunts you!". The data records 4-14 adds on a 10-16 s cycle.

    Interval
    13 s

    How to handle: Clear the pack before the next summon lands; at 14 adds a single-target build falls behind. Keep moving so the new adds do not surround you while you finish the last wave.

Phase changes

  1. Below 50% health · one trigger

    • Changes the attack pattern Attack pattern swap

      The boss replaces its action list with a new rotation, shown as the child steps. This is a phase change, not an attack: the parent entry has no cast, damage, or timer.

      New rotation: Charge · Persistent hazard · Frontal cone · Summon

      How to handle: Re-read the new rotation and reset your positioning; old safe spots may no longer be safe. Treat the first action of the new list as the start of a fresh pattern.

      Inferred from game data — not yet verified in game

How to fight it

Up to three actions, taken from the timing data: shortest warning, shortest interval, then the first new phase action.

  1. 1
    Shortest warning (1 s) Persistent hazard

    Place the new hazard away from your current path, then fight around it instead of kiting through it. On a 10 s cycle the arena fills fast, so keep one side clear.

    Inferred from game data — not yet verified in game
  2. 2
    Most frequent (every 6 s) Frontal cone

    Use the warning to step through the boss's side or behind it; walking straight back keeps you in the cone longer. Re-enter after the telegraph resolves.

    Inferred from game data — not yet verified in game
  3. 3
    At 50% health Changes the attack pattern

    Re-read the new rotation and reset your positioning; old safe spots may no longer be safe. Treat the first action of the new list as the start of a fresh pattern.

    Inferred from game data — not yet verified in game

Suggested build focus

Build tips recorded for this boss's attack types.

  • Melee builds should circle toward the flank during the warning; ranged builds can strafe out of the wedge. Inferred from game data — not yet verified in game
  • Sustained movement is better than a single dash; the line keeps sweeping after the warning.
  • Melee builds need a movement plan here; ranged builds can keep uptime from outside the circle.
  • Area damage pays for itself here: one clear per wave beats single-target cleanup.
Paladin First clear S Druid First clear S Hunter First clear A

Based on the site's first-clear class ranking, not zone-specific testing.

Attacks and hazards

Frontal cone

frontal cone
Base interval
7 s
Warning time
1.4 s

Leave the cone before the warning finishes.

Rotating line

rotating line
Base interval
14 s
Warning time
1.8 s

Move with the safe side of the rotating beam.

Circle around the boss

boss circle
Base interval
11 s
Warning time
1.3 s

Leave the marked area around the boss before it resolves.

Summon

summon adds
Base interval
13 s
Summons
8

Clear the adds without letting them close the exit.

Health phases

Thresholds are base client values; difficulty and run scaling can change the encounter.

Below 50% health · one trigger

Changes the attack pattern

replace actions

Watch the warning marker and preserve an escape route.

  1. 1
    Charge
    Base interval
    7 s
  2. 2
    Persistent hazard
    Base interval
    10 s
    Warning time
    1 s
  3. 3
    Frontal cone
    Base interval
    6 s
    Warning time
    1 s
  4. 4
    Summon
    Base interval
    13 s
    Summons
    8

Mechanics can scale with difficulty, party size and later patches. The values above are stored base client parameters, not measured cast times.

Class loot

Other encounters in Blackrock Mountain

04:00 · Encounter 1 General Angerforge 12:00 · Encounter 3 Emperor Dagran Thaurissan 16:00 · Encounter 4 Majordomo Executus 20:00 · Final boss Nefarian