The Bastion of Twilight

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Boss abilities and loot tables from Blizzard's own journal, boss by boss.

The Bastion of Twilight stands as a dark symbol of the Old Gods' burgeoning power on Azeroth. Various branches of the Twilight's Hammer dwell deep beneath the towering form--considered the cult's foremost command center--along with their twisted leader, Cho'gall. There, he and his servants conspire to bring the Old Gods' apocalyptic visions to fruition by bleeding Azeroth of all sanity, hope, and life.

Written notes for this instance are a later milestone. Everything on this page comes from Blizzard's journal data.

Expansion: Cataclysm
Minimum Level: 35
Modes: 10 Player, 25 Player, 10 Player (Heroic), 25 Player (Heroic)

Bosses

1. Halfus Wyrmbreaker

Imbued with unnatural power and stamina by Cho'gall, the ettin Halfus Wyrmbreaker captures dragons for use as fodder in the Twilight's Hammer's rituals. To this end, he has enslaved a behemoth proto-dragon to aid him in hunting down his winged prey.

Abilities

Halfus Wyrmbreaker
Each week a random three of Halfus's five captured dragonkin awaken. Each awakened dragonkin empowers Halfus and his enslaved Proto-Behemoth with an ability.
Imprisoned Dragonkin
Halfus has imprisoned a Slate Dragon, a Nether Scion, a Storm Rider, a Time Warden, and a pack of Orphaned Emerald Whelps. They surround him on his platform, wearing bonds of servitude. If freed they will each turn on their master and weaken him, but Halfus then dominates the dragonkin and forces them to fight against the players. In Normal Difficulty three random dragonkin awaken each week, w

Loot

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2. Theralion and Valiona

Magically aged to adulthood, Valiona and Theralion were to be paragons among a new clutch of twilight dragons, leading their brood in scouring Azeroth of life. Instead, they waste their incredible powers constantly bickering and fighting each other.

Abilities

Theralion
When the encounter begins, Theralion immediately takes to the air, while Valiona engages the attackers on the ground. The twin dragons share a single health pool, and each alternates between being airborne and fighting on the ground.
Valiona
When the encounter begins, Theralion immediately takes to the air, while Valiona engages the attackers on the ground. The twin dragons share a single health pool, and each alternate between being airborne and fighting on the ground.
Twilight Realm
Being struck by Theralion's Dazzling Destruction or Valiona's Deep Breath pulls players into the Twilight Realm. In this alternate plane of existence, spheres of volatile twilight energy float around and detonate if touched. Collapsing portals appear randomly throughout the area, and players may use a portal to return to the material plane. Each portal disappates after a time.

Loot

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3. Ascendant Council

As the most powerful Twilight's Hammer cultists to be twisted into elemental beings, the Ascendant Council members have long forgotten their existence as mere mortals. From their wicked sanctum, they oversee the selection of new ascension candidates.

Abilities

Stage One: You Dare Invade?
At the start of the encounter, Feludius and Ignacious enter the battle. Arion and Terrastra then watch from the balconies above.
Stage Two: We Will Handle Them!
Once either Feludius or Ignacious reaches 25% health, both Councillors retreat. Arion and Terrastra then descend from above to carry on the fight.
Stage Three: BEHOLD YOUR DOOM!
Once either Arion or Terrastra reaches 25% health, the Councillors grow impatient and place all combatants in a stasis field. All four Councillors combine to form the Elementium Monstrosity, beginning the final phase of the encounter.

Loot

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4. Cho'gall

Under Cho'gall's control, the orcish Twilight's Hammer clan was transformed into a murderous cult obsessed with the Old Gods and their herald, Deathwing. Extended contact with his dark master has hideously warped both Cho'gall's mind and body.

Abilities

Corrupted Blood
Exposure to several of Cho'gall's abilities increases a player's Corruption level. For each point of Corruption they have, players suffer 2% additional damage from Cho'gall's Corruption of the Old God ability.
Stage One: Chaos Comes!
Cho'gall beckons to the weak of mind, causing random players to abandon their loyalties and begin to Worship Cho'gall. Worshipping Cho'gall grants him one application of Twisted Devotion every 3 sec.
Stage Two: Come, Infinite Night!
When Cho'gall reaches 25% health, he calls upon the full powers of the Old Gods. He absorbs the dark energies of any remaining Corrupting Adherents and pools of Spilled Blood of the Old God, then transforms himself into a twisted creature.

Loot

Showing the first 20 of 33 items. Open The Boss Page

5. Sinestra

Originally Deathwing's prime consort, Sinestra created the first twilight dragons, but was later obliterated by one of her terrifying creations. Now a ravaged husk reanimated by insidious magic, Sinestra oversees the creation of new twilight clutches.

Abilities

Stage One: I Will Deal With You Myself!
At the outset of the battle, Sinestra is weakened from past battles and from nurturing the Twilight brood. She begins with only 60% of her maximum health, and her damage dealt is reduced by by 40%.
Stage Two: I Tire of This!
When Sinestra is brought to 30% health, she draws upon ambient energy to restore her power and erects a shield to protect herself.
Stage Three: Now Die!
Once the players destroy the Pulsing Twilight Eggs, Sinestra brings her magical duel with Calen to an end and attacks the players with her full fury. Empowered by the twilight eggs from which she reclaims her siphoned energy, Sinestra no longer deals reduced damage.
Heroic Difficulty Only
Sinestra is only available in Heroic Difficulty.

Loot

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Data from patch 12.1.0. Game data provided by Blizzard Entertainment through the Battle.net API.