Halls of Lightning

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

Upon departing Azeroth, the titans entrusted loyal protectors with safeguarding Ulduar, an enigmatic city nestled in the mountains of the Storm Peaks. Designated supreme among his brethren was the guardian known as Loken, but with the power of the titan complex in his hands, he turned to darkness and plunged the region into chaos.

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

Expansion: Wrath of the Lich King
Minimum Level: 30
Modes: Normal, Heroic

Bosses

1. General Bjarngrim

The iron forces of Loken are legion and their general, Bjarngrim, stands above them all. As the vanguard of Loken's Halls of Lightning, the iron commander ensures that any who trespass in his master's domain are terminated with extreme prejudice.

Abilities

Charge Up
While General Bjarngrim is out of combat, he will periodically channel electrical energy, granting Temporary Electrical Charge to himself and allies within 25 yards.
Battle Stance
General Bjarngrim inflicts Physical damage to a player, leaving them wounded, reducing the effectiveness of any healing received by 25% for 5 sec.
Berserker Stance
General Bjarngrim attacks all players within 8 yards in a whirlwind of steel that lasts 8 sec and inflicts Physical damage on each spin.
Defensive Stance
General Bjarngrim become immune to bleed, poison and disease effects. In addition, he increases his armor by 20% for 8 sec.
Stormforged Lieutenant
Stormforged Lieutenants attempt to weld an enemy to the ground, inflicting 0 Nature damage and slowing the target whenever they move for 10 sec.

Loot

2. Volkhan

Loken's powerful legions are a testament to the craftsmanship of his blacksmith, Volkhan. His work is never ending, ceaselessly creating soldiers to fight for the fallen keeper. Only when the blacksmith's creations stand atop the crumpled bodies of their enemies will his work be done.

Abilities

Heat
Volkhan heats up a Molten Golem, healing it for 20% of its maximum health.
Temper
Volkhan strikes his anvil, creating Molten Golems.
Shattering Stomp
When Volkhan reaches 25% health remaining he stomps the ground, inflicting Physical damage to all players and shattering all Brittle Golems.
Molten Golem
Molten Golems randomly attack a player when created and after using Immolation Strike.

Loot

3. Ionar

Loken does not rely on his iron minions as his personal defenders. The fallen keeper relies upon lightning itself. Ionar and its cohorts were given sanctuary within the Halls of Lightning in exchange for their unquestioning loyalty and willingness to slaughter any who seek to confront their new master.

Abilities

Static Overload
Ionar charges a player with energy, inflicting 0 Nature damage to the charged player and their allies within 8 yards every 2 sec for 10 sec. When Static Overload expires, it explodes for an additional 0 Nature damage to all players within 8 yards, knocking them back.
Ball Lightning
Ionar hurls a ball of lightning at a random player, inflicting 0 Nature damage to all players within 6 yards of the target.
Disperse
When Ionar reaches 50% health remaining, he disperses into Sparks of Ionar that pursue players for 15 seconds.

Loot

4. Loken

The prime designate of Azeroth was tasked to keep Yogg-Saron secure within its prison. None could have foreseen that the keeper entrusted to safeguard the world from the Old God's malevolence would be the one responsible for its undoing.

Abilities

Pulsing Shockwave
Lightning Nova
Arc Lightning

Loot

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