TheWoWDBSepulcher of the First Ones
The Jailer Guide
The Jailer in Sepulcher of the First Ones, quoted from the Adventure Guide. Database holds the raw abilities and the full loot table.
30-second TL;DR
Adventure Guide says
- The champions of Azeroth assault the Jailer as he attempts to use the Machine of Origination to remake existence.
- The Jailer starts the battle by asserting control over the machine's Control Pylons using Relentless Domination.
- Stages named in the Adventure Guide: Stage One: Origin of Domination, Stage Two: Unholy Attunement, Stage Three: Eternity's End.
- Tanks: The Jailer will permanently Dominate any player in line of sight with Relentless Domination.
- Healers: The Jailer will permanently Dominate any player in line of sight with Relentless Domination.
- Damage dealers: The Jailer will permanently Dominate any player in line of sight with Relentless Domination.
Overview
Adventure Guide says
The champions of Azeroth assault the Jailer as he attempts to use the Machine of Origination to remake existence. The Jailer starts the battle by asserting control over the machine's Control Pylons using Relentless Domination. Once all Control Pylons have been brought under his control, the Jailer begins an Unholy Attunement in an attempt to activate the machine. The force of Shattering Blast can disrupt pylons and delay this attunement. When the Jailer connects a line of Control Pylons to the center of the machine, The Unmaking begins. The Machine of Origination begins to drain Azeroth of its lifeforce, while the Jailer assaults Azeroth with Desolation. Once Azeroth's life force reaches 10% the Jailer will execute Azeroth and unmake all of existence.
- The Jailer will permanently Dominate any player in line of sight with Relentless Domination.
- The force of Shattering Blast will destroy any pylons that have been raised by Unholy Attunement.
- Allies afflicted by Chains of Anguish receive any Physical damage taken by the primary target.
- Any damage not intercepted by players during Desolation will harm Azeroth.
- The Jailer will permanently Dominate any player in line of sight with Relentless Domination.
- The final eruption of Rune of Damnation will damage allies unless the player is inside a pylon conduit.
- Players afflicted by Rune of Compulsion will throw themselves off the platform if their shields are not removed.
- Any damage not intercepted by players during Desolation will harm Azeroth.
- The Jailer will permanently Dominate any player in line of sight with Relentless Domination.
- The final eruption of Rune of Damnation will damage allies unless the player is inside a pylon conduit.
- Misery and Rune of Domination inflict heavy damage to all players.
- Any damage not intercepted by players during Desolation will harm Azeroth.
Encounter phases
Adventure Guide says
- Stage One: Origin of Domination
- Stage Two: Unholy Attunement
- Stage Three: Eternity's End
Tank mechanics
Adventure Guide says
- The Jailer will permanently Dominate any player in line of sight with Relentless Domination.
- The force of Shattering Blast will destroy any pylons that have been raised by Unholy Attunement.
- Allies afflicted by Chains of Anguish receive any Physical damage taken by the primary target.
- Any damage not intercepted by players during Desolation will harm Azeroth.
Healer mechanics
Adventure Guide says
- The Jailer will permanently Dominate any player in line of sight with Relentless Domination.
- The final eruption of Rune of Damnation will damage allies unless the player is inside a pylon conduit.
- Misery and Rune of Domination inflict heavy damage to all players.
- Any damage not intercepted by players during Desolation will harm Azeroth.
DPS mechanics
Adventure Guide says
- The Jailer will permanently Dominate any player in line of sight with Relentless Domination.
- The final eruption of Rune of Damnation will damage allies unless the player is inside a pylon conduit.
- Players afflicted by Rune of Compulsion will throw themselves off the platform if their shields are not removed.
- Any damage not intercepted by players during Desolation will harm Azeroth.
Normal, Heroic, and Mythic
Adventure Guide says
Only sentences the Adventure Guide itself marks as a difficulty change. We do not invent extra Heroic or Mythic strategy.
- On Mythic difficulty, players who gain 3 applications of Tyranny are afflicted with Domination.
- On Mythic difficulty, players hit by Misery are afflicted by Relentless Misery.
- On Mythic difficulty, the Jailer consumes any Blood of Azerite in the chamber as Unholy Attunement is cast.
- On Mythic difficulty, the size of Defile grows slowly over time.
Boss abilities
| Ability | Adventure Guide | Notes |
|---|---|---|
 World Crusher | ||
 Arcane Vulnerability | ||
 Blood of Azeroth | ||
 Relentless Domination | ||
 Domination | ||
 Tyranny | On Mythic difficulty, players who gain 3 applications of Tyranny are afflicted with Domination. | |
 Chains of Oppression | ||
 Oppression | ||
 Martyrdom | ||
 Imprisonment | ||
 Persecution | ||
 Suffering | ||
 Misery | On Mythic difficulty, players hit by Misery are afflicted by Relentless Misery. | |
 Torment | ||
 Rune of Damnation | ||
 World Cracker | ||
 Unholy Attunement | On Mythic difficulty, the Jailer consumes any Blood of Azerite in the chamber as Unholy Attunement is cast. | |
 Unholy Eruption | ||
 Unholy Ground | ||
 Consumed Azerite | ||
 Shattering Blast | ||
 Rune of Compulsion | ||
 Decimator | ||
 Tormenting Echo | ||
 World Shatterer | ||
 Surging Azerite | ||
 Expelled Corruption | ||
 Desolation | ||
 Rune of Domination | ||
 Dominating Will | ||
 Chains of Anguish | ||
| Chain Breaker | ||
| Incarnation of Torment | ||
 Defile | On Mythic difficulty, the size of Defile grows slowly over time. | |
 Falling Debris |
Loot
Every name is a TheWoWDB item page. Hover the row for the first-party tooltip.
Bindings of the Banished One
Chains of Domination
Domination's Deliverance
Epochal Oppressor's Greaves
Forbidden Truth
Fractal Cypher of the Zereth Overseer
Gavel of the First Arbiter
Legguards of the Ultimate Threat
Runecarver's Twisted Ward
Scars of Fraternal Strife
Worldkiller Iris
Zovastrum, the Unmaking
Hardened Bones
Haunting Apparitions
Lingering Numbness
Ready for Anything
Resolute Barrier
Reversal of Fortune
Viscous InkMounts, toys, achievements, transmog
Only rows the journal loot table or an achievement title can prove for this encounter.
Mounts
Achievements
Heroic: Sepulcher of the First Ones · Mythic: Anduin Wrynn · Mythic: Artificer Xy'mox · Mythic: Artificer Xy'mox · Mythic: Lords of Dread · Mythic: Prototype Pantheon · Mythic: Rygelon · Mythic: Sepulcher of the First Ones · Mythic: The Jailer · Mythic: Vigilant Guardian · Sepulcher of the First Ones
Entrance and instance
Sepulcher of the First Ones is a raid in the Adventure Guide. See the Sepulcher of the First Ones database page for the raw journal, map, and loot grid. This guide does not invent coordinates or a walking path.
Related bosses
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 The Jailer?
The champions of Azeroth assault the Jailer as he attempts to use the Machine of Origination to remake existence.
How many abilities does The Jailer have?
The current datamine lists 35 named abilities on the The Jailer encounter.
What does The Jailer drop?
The Adventure Guide lists 19 drops. Each name links to its TheWoWDB item page. The full table also lives on the Sepulcher of the First Ones database page.
Does The Jailer change on Heroic or Mythic?
Yes. The Adventure Guide adds difficulty sentences on the abilities that change; those sentences are collected in the difficulty section. We do not invent additional Heroic or Mythic strategy.
Does The Jailer drop a mount?
The journal loot table includes Zereth Overseer. 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.