Boss guide
How to beat C'Thun
Gates of Ahn'Qiraj · Final encounter · 20:00 · 55,500 base HP
When it arrives
Arrives at 20:00 as the final encounter in Gates of Ahn'Qiraj.
Boss yell“YOU ARE ALREADY DEAD.”
Attack timeline
6 recorded actions for this boss, in data order. Values are stored base client parameters.
1 Projectile volley
In-game text“C'Thun hurls axes across the field!”
The boss throws a volley across the field; the game warns "the boss hurls axes across the field!". The data records 5-9 projectiles every 4.5-6 s.
- Interval
- 4.5 s
How to handle: Strafe between the gaps instead of backing away, and change direction only after a projectile passes. With a 4.5 s cycle there is no safe standing window.
2 Circle grid
A grid of circles covers the ground, telegraphed for 2 s and repeated every 12-15 s where an interval is listed. The data does not give the grid size or how many cells are safe.
- Interval
- 12 s
- Warning
- 2 s
How to handle: Move to an unmarked cell during the 2 s warning and stay there until the grid resolves. Do not cut diagonally through marked cells to reach a better spot.
Inferred from game data — not yet verified in game3 Circle around the boss
Boss-centered circleIn-game text“Lava wells up around C'Thun!”
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
- 9 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 Triggered circles
Three circles are triggered in sequence after a 1.8 s warning, on a 9-14 s cycle. The data does not say what triggers each circle or how much delay separates them.
- Interval
- 14 s
- Warning
- 1.8 s
How to handle: Clear the first circle immediately and keep moving for the next two; the 1.8 s warning covers the set, not each circle. Do not return to the first spot until the chain ends.
Inferred from game data — not yet verified in game5 Rotating line
In-game text“C'Thun'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
- 20 s
- Warning
- 2 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.
6 Summon
Add waveIn-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
- 10 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
Below 50% health · one trigger
- Summon Add wave
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.
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.
How to fight it
Up to three actions, taken from the timing data: shortest warning, shortest interval, then the first new phase action.
- 1Shortest warning (1.3 s) Circle around the boss
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.
- 2Most frequent (every 4.5 s) Projectile volley
Strafe between the gaps instead of backing away, and change direction only after a projectile passes. With a 4.5 s cycle there is no safe standing window.
Suggested build focus
Build tips recorded for this boss's attack types.
- A movement-speed item or dash makes the gap between volleys much safer.
- A short dash can cross one marked cell, but plan the destination before the warning starts. Inferred from game data — not yet verified in game
- Melee builds need a movement plan here; ranged builds can keep uptime from outside the circle.
- Keep moving through the set; a stationary rotation loses the whole chain. Inferred from game data — not yet verified in game
Based on the site's first-clear class ranking, not zone-specific testing.
Attacks and hazards
Projectile volley
projectile volley- Base interval
- 4.5 s
- Count
- 9
Keep room to move and avoid the visible projectile paths.
Circle grid
grid circles- Base interval
- 12 s
- Warning time
- 2 s
Move into an unmarked square before the grid resolves.
Circle around the boss
boss circle- Base interval
- 9 s
- Warning time
- 1.3 s
Leave the marked area around the boss before it resolves.
Triggered circles
triggered circles- Base interval
- 14 s
- Warning time
- 1.8 s
- Count
- 3
Clear the initial trigger, then leave the follow-up zones.
Rotating line
rotating line- Base interval
- 20 s
- Warning time
- 2 s
Move with the safe side of the rotating beam.
Summon
summon adds- Base interval
- 10 s
- Summons
- 12
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
Summon
summon adds- Summons
- 14
Clear the adds without letting them close the exit.
Mechanics can scale with difficulty, party size and later patches. The values above are stored base client parameters, not measured cast times.
Class loot
Warrior
- Sulfuras, Hand of Ragnaros main hand · Legendary · 20%
Paladin
- Ashbringer main hand · Legendary · 20%
Hunter
- Rhok'delar, Longbow of the Ancient Keepers main hand · Legendary · 20%
Rogue
- Kingsfall off hand · Legendary · 20%
- Thunderfury, Blessed Blade of the Windseeker main hand · Legendary · 20%
Priest
- Anathema main hand · Legendary · 20%
Shaman
- Doomhammer main hand · Legendary · 20%
- Shield of the Earthshatter off hand · Legendary · 20%
Mage
- Atiesh, Greatstaff of the Guardian main hand · Legendary · 20%
Warlock
- Atiesh, Greatstaff of the Guardian main hand · Legendary · 20%
Druid
- Atiesh, Greatstaff of the Guardian main hand · Legendary · 20%