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C'Thun, Healer Guide

Updated 1 year, 1 month ago for patch 1.13.6 and Season of Mastery by Preston. View the change log.

C'Thun Dungeon Journal ModelThis page covers a healer-focused strategy for C'Thun in the Temple of Ahn'Qiraj. 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 with the encounter, logs information, and Dungeon Journal information. I'll continue to update it as-needed.

General Mechanics and Abilities

Stage One - The Eye of C'Thun

This stage begins the encounter and ends when the Eye of C'Thun reaches 0% health.

  • Stay at least 10-yards away from other players to avoid chaining the damage from Eye Beam.
  • Avoid the Dark Glare beam from the Eye of C'Thun as it rotates around the room.
  •  Eye Tentacles spawn around the Eye of C'Thun.
    • Eye Tentacle
      • Interrupt Mind Flay to prevent the light damage over time dealt to a random player.
  • Claw Tentacles spawn at various points around the room.
    • Claw Tentacle

Stage Two - C'Thun

This stage begins when the Eye of C'thun reaches 0% health and ends when C'Thun is killed.

  • Eye Tentacles continue to spawn and function the same as in stage one.
  • C'Thun is shielded and takes 99% reduced damage.
    • This shield is temporarily removed by killing a Flesh Tentacle, detailed below.
  • A Giant Eye Tentacle spawns near C'Thun about every 1-minute.
    • Giant Eye Tentacle
      • Susceptible to stuns and incapacitating effects.
      • If stuns aren't available, stay at least 10-yards away from other players to avoid chaining damage from Eye Beam.
  • A Giant Claw Tentacle spawns at a random player's location about every 1-minute.
    • Giant Claw Tentacle
      • Avoid the impact location of Ground Rupture.
      • The tanks will be dealing with Thrash, taking a burst of moderate damage.
      • If no players are in melee range, it will submerge and reemerge under another player.
  • Players are periodically pulled into C'Thun's Stomach.
    • Players take steadily increasing damage over time from Digestive Acid.
    • Two Flesh Tentacles are present in the Stomach.
      • Flesh Tentacle
        • When killed, C'Thun is stunned and becomes vulnerable to damage for 45-seconds.
    • To leave the Stomach, step on the dark teleportation pad on the mass between the two Flesh Tentacles.

Season of Mastery Differences

  • Currently, there are no differences that I'm aware of.

Resistance Levels

  • All players should use as much Nature Resistance as possible without sacrificing other stats.

Healing Notes

The notes below mostly pertain to progression difficulty, meaning if you out-gear the difficulty you're on or use extra healers they may not apply.

  • During stage one, players will be very spread out in order to deal with tentacles and prevent Eye Beam from chaining its damage.
  • During stage two:
    • If you're sent into C'Thun Stomach, heal the other players inside to full health before leaving.
    • Be prepared to help DPS C'Thun when its shield is temporarily disabled, even if it's just melee or wand attacks.

Debuffs to Track


Healer DBM Settings for C'Thun Thumbnail
Healer DBM Settings for C'Thun


Comment on C'Thun, Healer Guide

Changelog - View the last ten changes. - +

April 04, 2022 - 3:34 pm (C'Thun) - Corrected Mind Flay spell ID.

April 04, 2022 - 3:32 pm (Ouro) - Added Season of Mastery information.

April 04, 2022 - 3:29 pm (Twin Emperors) - Added Season of Mastery information, added Virulent Poison as a poison dispel.

April 04, 2022 - 3:23 pm (Princess Huhuran) - Added Season of Mastery information, corrected Wyvern Sting spell ID.

April 04, 2022 - 3:19 pm (Viscidus) - Added Season of Mastery information, corrected Toxin cloud spell.

April 04, 2022 - 3:13 pm (Fankriss the Unyielding) - Added Season of Mastery information, and additional Entangle spell IDs.

April 04, 2022 - 3:11 pm (Battleguard Sartura) - Added Season of Mastery information.

April 04, 2022 - 3:07 pm (Silithid Royalty) - Added Season of Mastery information.

March 29, 2022 - 1:55 pm (The Prophet Skeram) - Added Season of Mastery differences.

July 26, 2020 - 3:43 pm (C'Thun) - Reviewed before release, no updates needed.