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Viscidus, Healer Guide

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

Viscidus Dungeon Journal ModelThis page covers a healer-focused strategy for Viscidus 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

  • Stay at least 15-yards away to avoid Poison Shock.
  • Avoid the locations of Toxin clouds.
  • Deals moderate damage to all players and stacking light damage over time with Poison Bolt Volley.
  • Freezing and Shattering Viscidus is the only way to kill him.
    • After being hit with ~200 separate Frost Damage attacks (spells, wands, potion effects, etc), Viscidus will be Frozen.
    • When Frozen, hitting Viscidus with ~75 melee attacks will cause it to Shatter into several Globs of Viscidus.
      • Globs of Viscidus
        • Move towards the center of the room, reforming into Viscidus after 15-seconds.
        • When killed, reduce Viscidus' remaining health by 5%.

Season of Mastery Differences

  • After killing The Prophet Skeram, players can interact with the Prophecy of Chaos at the back of the hallway leading deeper into Ahn'Quiraj.
    • The Prophecy of Chaos allows players to increase the difficulty of all bosses by causing different lesser enemies to spawn during encounters. Higher difficulty levels are unlocked with higher reputation and award additional loot.
      • Glyph of Madness (Friendly) causes Claw Tentacles to spawn.
        • Claw Tentacle
      • Glyph of Darkness (Honored) causes Eye Tentacles to spawn.
        • Eye Tentacle
          • Interrupt Mind Flay to prevent the light damage over time dealt to a random player.
      • Glyph of Chaos (Revered) causes Giant Claw Tentacles to spawn.
        • 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.
      • Glyph of the Void (Exalted) causes Eye of C'Thun to spawn.
        • Eye of C'Thun
          • Stay at least 10-yards away from other players to avoid chaining the damage from Eye Beam.

Resistance Levels

  • All players should use as much Nature Resistance as possible without sacrificing other stats, adding more as-needed to make Poison Bolt Volley manageable for healers.

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.

  • Dispel Poison Bolt Volley (poison) as quickly as possible to keep the damage under control.
  • As mana and healing permit, assist in Freezing and Shattering Viscidus using spells, wands, or potion effects that deal Frost Damage.

Debuffs to Track


Healer DBM Settings for Viscidus Thumbnail
Healer DBM Settings for Viscidus


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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.