Wrath of the Lich King · Tier 10 · The Ruby Sanctum

The Ruby Sanctum raid guide

Tactics for Halion, progression checklists and a documented change history from original Wrath to Wrath Classic.

English10/25-player1 bossNerf history

Updated: Aug 19, 2026
Game version: Wrath of the Lich King · Tier 10

How to use this guide

Read the change history and boss summaries before the detailed instructions. Boss cards cover core tactics and role assignments, with version-specific difficulty differences where applicable.

This guide covers level 80 Wrath. Level 60 Classic, Timewalking and legacy scaling from later expansions are outside its scope.

The Ruby Sanctum in chronological Wrath progression

Wrath's final raid culminates in Halion. Baltharus, Saviana and Zarithrian are the gate-opening mini-bosses; the official number of raid bosses is one, but their dangerous abilities are covered in preparation.

For raid lead: Choose the 10- or 25-player version and any difficulty options available for this raid, then assign encounter responsibilities before pulling.

Quick links

The Ruby Sanctum: nerf and change history

The timeline separates intentional difficulty changes, release schedule, loot/catch-up changes, and actual bug fixes. Inaccurate pre/post figures are not filled with guesswork.

Date	Documented change	Effect
June 29 – 30, 2010	The Ruby Sanctum opened as Wrath’s final raid after patch 3.3.5 had been installed.	Raid brought normal and heroic versions without a new raid tier.
Release hotfixes	Corporeality, portal and encounter reset issues were fixed.	Undocumented numerical nerf is not assumed.
Wrath Classic 2024	Ruby Sanctum was opened as its own end-stage release.	The Classic schedule will be separated from the original 2010 date.

Each boss’s nerf section refers to this raid-wide timeline and highlights only changes relevant to that encounter.

The Ruby Sanctum - bosses in order of progression

Halion

Ruby Sanctum · Fire/twilight phases, cutters and Corporeality balance.

Encounter 1 / 1 · The Ruby Sanctum

Halion

Ruby Sanctum · Fire/twilight phases, cutters and Corporeality balance.

10/25-playerLevel 80Ruby Sanctum

Contents

1. Before pull 2. Tactic 3. Roles 4. Mechanics 5. Nerfs Back to boss list

TL;DR: Defeat Baltharus, Saviana and Zarithrian and clear their adds before Halion. In phase 1, drop debuff zones at the edge and avoid Meteor Strike. In phase 2, move with Twilight Cutter without crossing it. In phase 3, split into balanced groups between the physical and twilight realms and adjust damage according to Corporeality.

Raid priorities

Defeat Baltharus, Saviana and Zarithrian and clear their adds before Halion.
In phase 1, drop debuff zones at the edge and avoid Meteor Strike.
In phase 2, move with Twilight Cutter without crossing its beam.
In phase 3, split into balanced realm groups and adjust damage according to Corporeality.

Before the pull

Review the tanking, healing and damage responsibilities for Halion in a 10- or 25-player group.
Agree on debuff drop points, Meteor Strike movement, Twilight Cutter movement and phase-3 realm groups.
Assign interrupts, dispels, crowd control and target swaps before the pull.
Save raid and personal cooldowns for the encounter’s most dangerous phase.

Mechanics reference

Fire phase

Avoid Flame Breath and the fire created by Meteor Strike. Heroic mode also introduces adds.

Fiery Combustion and Soul Consumption

Move affected players to the edge before carefully timed dispels.

Twilight Cutter

In phase 2, a lethal beam rotates between the orbs.

Two realms

Phase 3 splits the raid between the physical and twilight realms.

Corporeality

Balance damage dealt in the two realms. Physical realm does not mean the physical damage school.

Phase plan and tactic

Preparation
Defeat Baltharus, Saviana and Zarithrian and clear their adds before Halion.

Phase 1: physical realm
In phase 1, drop debuff zones at the edge and avoid Meteor Strike.

Phase 2: twilight realm
In phase 2, move with Twilight Cutter without crossing its beam.

Phase 3: balance both realms
In phase 3, split into balanced realm groups and adjust damage according to Corporeality.

Role notes

Tanks

Face the boss and adds away from the raid; swap tanks when required by debuffs or phase changes.
Tell healers in advance when you will use defensive cooldowns or make a dangerous tank swap.

Healers

Assign tank healing, raid healing and dispels before the pull.
Plan raid cooldowns for the largest predictable damage window and avoid unnecessary overlap.

Melee DPS

Stay clear of frontal and rear attacks, and switch to adds as soon as they are called.
Don't sacrifice movement or soak mechanics for damage uptime.

Ranged DPS

Maintain the required spacing and prioritize distant adds, orbs or moving targets.
Save abilities used while moving for mandatory transitions.

Raid utility

Agree on interrupt, purge, stun, slow and immunity rotations depending on the encounter.
Use a combat resurrection only when the fallen player’s role is essential for the next mechanic.

Nerfs: what changed

The boss-specific history is read in conjunction with The Ruby Sanctum raid timeline; original Wrath and Wrath Classic are kept separate.
Minibosses are dealt with in raid preparation; Halion is the official raid boss.
Level squishes, Timewalking and changes to soloing from later expansions are outside the scope of these level 80 tactics.

Original WrathWrath ClassicSource scope

Sources and version scope

Boss counts, release structure and Classic availability have been checked against Blizzard’s publications. Mechanics and original patch changes are cross-checked against Warcraft Wiki encounter guides and patch histories.

Blizzard — Wrath Classic: Ruby Sanctum now live
worldofwarcraft.blizzard.com/en-us/news/24054791/wrath-of-the-lich-king-classic-enter-the-ruby-sanctum-now-live
Warcraft Wiki — The Ruby Sanctum
warcraft.wiki.gg/wiki/Ruby_Sanctum
Warcraft Wiki — Patch 3.3.5
warcraft.wiki.gg/wiki/Patch_3.3.5

Updated 19 August 2026. Legacy changes from later expansions are excluded.