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Siege of Orgrimmar

Immerseus Guide

Immerseus in Siege of Orgrimmar, quoted from the Adventure Guide. Database holds the raw abilities and the full loot table.

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30-second TL;DR

Adventure Guide says

  • Immerseus begins with 100 Corruption, displayed as a visible power bar, and the objective of the encounter is to cleanse him by reducing his Corruption level to 0.
  • Each time Immerseus is reduced to zero health, he Splits into a mix of dark Sha Puddles and watery Contaminated Puddles.
  • Stages named in the Adventure Guide: Tears of the Vale, Split.
  • Tanks: Point Immerseus away from the raid, and take turns tanking to mitigate the effects of Corrosive Blast.
  • Healers: Rotate away from Immerseus's Swirl ability.
  • Damage dealers: Rotate away from Immerseus's Swirl ability.

Overview

Adventure Guide says

Immerseus begins with 100 Corruption, displayed as a visible power bar, and the objective of the encounter is to cleanse him by reducing his Corruption level to 0. Each time Immerseus is reduced to zero health, he Splits into a mix of dark Sha Puddles and watery Contaminated Puddles. Following each Split, Immerseus reforms with reduced health and Corruption depending on how successful the raid was in dealing with the two types of Puddles. This cycle repeats until Immerseus's Corruption reaches 10 or lower, at which point he is cleansed.

  • Rotate away from Immerseus's Swirl ability.
  • When Immerseus splits, destroy the dark Sha Puddles before they reach the center and merge into Immerseus.
  • Rotate away from Immerseus's Swirl ability.
  • When Immerseus splits, heal Contaminated Puddles to purify them before they reach the center and merge with Immerseus.
  • When Sha or Contaminated Puddles reach the central pool, each one triggers Erupting Sha, damaging the entire raid.
  • Point Immerseus away from the raid, and take turns tanking to mitigate the effects of Corrosive Blast.
  • When Immerseus splits, destroy the dark Sha Puddles before they reach the center and merge into Immerseus.

Encounter phases

Adventure Guide says

  1. Tears of the Vale As a water elemental, Immerseus attacks players directly.
  2. Split Upon reaching zero health, Immerseus becomes unstable and bursts into a shower of Sha Puddles and Contaminated Puddles, which will attempt to reform in the pool at the center of the chamber. For each Sha Puddle killed and each Contaminated Puddle healed to full, Immerseus's Corruption is reduced by one.

Tank mechanics

Adventure Guide says

  • Point Immerseus away from the raid, and take turns tanking to mitigate the effects of Corrosive Blast.
  • When Immerseus splits, destroy the dark Sha Puddles before they reach the center and merge into Immerseus.

Healer mechanics

Adventure Guide says

  • Rotate away from Immerseus's Swirl ability.
  • When Immerseus splits, heal Contaminated Puddles to purify them before they reach the center and merge with Immerseus.
  • When Sha or Contaminated Puddles reach the central pool, each one triggers Erupting Sha, damaging the entire raid.

DPS mechanics

Adventure Guide says

  • Rotate away from Immerseus's Swirl ability.
  • When Immerseus splits, destroy the dark Sha Puddles before they reach the center and merge into Immerseus.

Boss abilities

AbilityAdventure GuideNotes
Sha Bolt
SwirlImmerseus causes torrents of Sha-corrupted water to burst from beneath the cracks in the ground.
Corrosive BlastStacks.
Seeping Sha
Swelling CorruptionImmerseus surges with power, gaining stacks of Swelling Corruption proportional to his current Corruption level.
Sha ResidueThis effect stacks.
CongealingThe speed of the Contaminated Puddle wanes as it increases in health.
Purified ResidueThis effect stacks.
Erupting Sha
Sha PoolTouching the Sha Pool causes it to shrink, whereas it will expand whenever any Puddle reaches it.
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Loot

Every name is a TheWoWDB item page. Hover the row for the first-party tooltip.

Bolt-Burster GripsBracers of Purified SpiritBracers of Sordid SleepBubble-Burst BracersChestplate of Congealed CorrosionCloak of Misguided PowerCorruption-Rotted GauntletsEncapsulated Essence of ImmerseusGreatbelt of Living WatersHood of Blackened TearsHood of Swirling SensesIchor-Dripping ShoulderpadsImmerseus' Crystalline EyePauldrons of Violent EruptionPuddle PunishersPurified Bindings of ImmerseusSalt Water SandalsSeal of Eternal SorrowSoul-Soaked GlovesTreads of Unchained HateTrident of Corrupted WatersWaterwalker Greatboots

Mounts, toys, achievements, transmog

Only rows the journal loot table or an achievement title can prove for this encounter.

Mounts

Kor'kron Juggernaut

Achievements

Heroic: Siege of Orgrimmar · Mythic: General Nazgrim · Mythic: Immerseus · Mythic: Iron Juggernaut · Mythic: Kor'kron Dark Shaman · Mythic: Malkorok · Mythic: Norushen · Mythic: Paragons of the Klaxxi · Mythic: Sha of Pride · Mythic: Siegecrafter Blackfuse · Mythic: Thok the Bloodthirsty · Siege of Orgrimmar

Entrance and instance

Siege of Orgrimmar is a raid in the Adventure Guide. See the Siege of Orgrimmar database page for the raw journal, map, and loot grid. This guide does not invent coordinates or a walking path.

Malkorok
The Fallen Protectors
General Nazgrim
Thok the Bloodthirsty
Paragons of the Klaxxi
Kor'kron Dark Shaman
Iron Juggernaut
Siegecrafter Blackfuse
Norushen
Sha of Pride
Galakras
Garrosh Hellscream
Spoils of Pandaria
Galakras

Player strategy

This page quotes the Adventure Guide. It does not add player strategy such as positioning, assignments, stack or spread calls, or cooldown timings unless that sentence is already in the journal.

Questions

What does the Adventure Guide say about Immerseus?

Immerseus begins with 100 Corruption, displayed as a visible power bar, and the objective of the encounter is to cleanse him by reducing his Corruption level to 0.

What does Immerseus drop?

The Adventure Guide lists 22 drops. Each name links to its TheWoWDB item page. The full table also lives on the Siege of Orgrimmar database page.

Does Immerseus change on Heroic or Mythic?

The current Adventure Guide text for this encounter does not include separate Heroic or Mythic sentences we can quote. If a later client build adds them, they appear here automatically.

Does Immerseus drop a mount?

The journal loot table includes Kor'kron Juggernaut. Each links to its TheWoWDB mount page.

Where does this guide's text come from?

Quoted Adventure Guide sections come from TheWoWDB's retail datamine (client build 12.1.0.69587, ingested 2026-09-01). Player strategy such as positioning, assignments, and cooldown timings is omitted unless that sentence is already in the journal.

Source and build

This page quotes the Adventure Guide. It does not add player strategy such as positioning, assignments, stack or spread calls, or cooldown timings unless that sentence is already in the journal. Quoted sections come from TheWoWDB Adventure Guide datamine (client build 12.1.0.69587, ingested 2026-09-01). Ability names link to first-party spell pages. When a newer retail build is ingested, this page updates with it.