The first thirty seconds of the clash shattered any illusion that they were fighting mere constructs. The Assembly of Iron did not fight with the practiced coordination of veteran soldiers.
Their synergy was deeper, structural, embedded into their very blueprints by the Titan Creators. Stormcaller Brundir, Runemaster Molgeim, and Steelbreaker moved not as three separate entities, but as three synchronized nodes of a singular lethal system. Brundir did not adjust his positioning to cover Molgeim out of tactical initiative; he moved because his core architecture was incomplete without Molgeim's runic field, his motions fluid and terrifyingly natural.
Reading about their design in pre-raid intelligence logs was one thing. Standing in the grand, stone-carved hall of Ulduar as three towering, rune-etched titans unleashed hell was entirely another.
Leylin felt the shift in his sensory grid the moment Brundir took to the air. The dwarf-like stormcaller floated effortlessly through the chamber's vaulted upper reaches, ignoring the ground-based constraints that mortal fighters instinctively tracked.
Then Brundir froze mid-air—a sudden, unnatural stillness.
"Interrupt!" Leylin's voice cut through the din, compressed to a sharp bark.
The air around Brundir hummed with terrifying density as arcs of ozone-blue lightning gathered around his dwarven frame. It was the wind-up to Overload.
Before the localized tempest could detonate across the frontline, Tyr'ganal acted. The Titan-forged watcher raised his spear, channeling a counter-surge directly into the nexus of Brundir's gathering energy. The strike hit the precise structural focal point rather than the outward discharge, collapsing the spell before it could expand.
A concussive shockwave of harmless static washed over the vanguard as the stormcaller's cast failed.
Brundir did not pause to register frustration. The machine intelligence simply logged the disruption, calculated the counter-vector, and executed his next operational command: Ride the Lightning.
Spatial displacement hummed violently through Leylin's monitoring network. Brundir vanished in a streak of blinding white arc-light, reappearing instantly in the rear ranks—targeting the exact pocket where the formation was thinnest and most vulnerable.
Or rather, where it had been thin fifteen seconds ago.
Brann Bronzebeard was no longer standing in that quadrant. Two minutes prior, Muradin had grabbed his younger brother by the collar and yanked him back ten yards with the practiced foresight of an elder sibling who knew Brann's spatial awareness was constantly eclipsed by his scholarly obsession.
Instead of an easy backline slaughter, Brundir materialized directly in front of Vindicator Yaala.
Forewarned by Harbinger Vurenn's real-time spiritual tether, Yaala was already mid-swing. Her massive crystal broadsword caught the stormcaller across his iron chest plate with a deafening CRACK. The blow didn't shatter the Titan construct, but the physical momentum threw Brundir off balance, stalling his immediate follow-up.
"Focus fire on the stormcaller!" Leylin commanded.
A hail of arcane missiles, fiery arrows, and holy bolts slammed into Brundir's staggered form, carving deep grooves into his runic armor.
"Rune of Death! Shift!" Sylvanas's voice echoed from an elevated stone pillar on the left flank.
Below her, Runemaster Molgeim slammed his gauntlets into the polished floor. A glowing, violet rune expanded rapidly beneath the right melee cluster, its ancient power corrupting the very atmosphere. The ground hissed as necrotic energy flared outward.
"Left, move left!" Vereesa Windrunner shouted from her perch, her eagle-eyed vantage point catching the expanding radius before those on the ground could process it.
The alliance strike team scattered, vaulting over stone debris to clear the perimeter. But Sylvanas lingered half a second too long, caught on the outer edge of the necrotic field as her bowstring snapped back against a shadow-infused shot.
The rune lashed out, its necrotic tendrils coiling toward the Ranger-General.
Before the dark magic could rot flesh or wither soul, Harbinger Vurenn materialized beside her. The ancient draenei mystic did not project a physical barrier; instead, he wove a delicate counter-frequency of pure Light, striking the spell's underlying resonance. The necrotic field sagged, its lethality stripped down to a dull, manageable ache.
Sylvanas didn't waste breath on thanks. She rolled out of the fading circle, came up on one knee, and unleashed a three-arrow burst into Molgeim's visor. Yaala was at her side a moment later, her glowing hands channeling a soothing wave of Holy Light to knit the minor decay wounds on Sylvanas's arm.
"Brundir is adapting!" Leylin warned, his eyes narrowed as he monitored the stormcaller's magical signatures. "Preparation time for Overload has decreased by forty percent!"
The Old God's shadow guiding the constructs was learning their response times. Brundir's secondary Overload gathered at double the speed of the first.
Tyr'ganal's second counter-blast slammed into the stormcaller just in the nick of time, the disruption landing mere milliseconds before the lightning expanded.
"The windows are closing," Leylin reported flatly. "Rhonin, divert disruption teams to split coverage between Molgeim and Brundir."
"Understood!" Archmage Rhonin called back. With a flick of his staff, a squad of Kirin Tor abjurers split their focus, throwing localized silence-fields and dampening webs over both giant targets.
It was a risky compromise, reducing overall damage output, but it stabilized the battlefield.
"Brundir is critical! Phase shift on my mark... NOW!" Leylin yelled.
The ranged dps unleashed their saved cooldowns. A barrage of pyretic blasts, holy smites, and dark rangers' arrows overwhelmed Brundir's remaining shields. With a final, agonizing groan of rending metal, Stormcaller Brundir collapsed, his core shattering into inert fragments.
Immediately, a violent surge of raw arc-energy erupted from his fallen body.
Supercharge.
The residual power surged directly into Steelbreaker. The largest of the three iron giants roared, his eyes blazing with blinding cyan fire as his physical size expanded, his metal skin glowing white-hot.
"He's acquiring Overwhelming Power!" Brann yelled from behind a fallen pillar. "Watch his gauntlets!"
Steelbreaker lunged forward, his massive fist glowing with destructive elemental force. He aimed a lethal Fusion Punch straight at the frontline.
Yaala stepped up to meet the blow. Lowering her heavy tower shield, she braced her hooves against the stone floor and invoked the Light. The impact sounded like a siege engine hitting a fortress wall. Shockwaves tore through the chamber floor, cracking ancient tiles.
The magical debuff of the Fusion Punch—a lingering elemental rot—seared into her shield's ward, but Yaala held her ground, teeth grit, absorbing the brunt of the kinetic and magical onslaught.
"Flank him!" Muradin bellowed, springing into the air with his twin hammers ablaze.
Muradin brought both weapons down on Steelbreaker's left knee. The titan construct retaliated instantly, releasing a radial discharge of High Voltage energy. Arcs of raw electricity slammed into Muradin's chest plate, driving the dwarf general back three paces, his armor smoking.
Muradin spat a mouthful of blood and grinned through his scorched beard. "Is that all you've got, metal-head?!"
A dedicated rotation of Kirin Tor restoration mages and Priests of the Light immediately blanketed Muradin and Yaala in glowing restoration barriers, stabilizing their vitals against the continuous electrical pulses.
With Brundir dead, the full weight of the assault turned toward Runemaster Molgeim. Without his aerial support, the runemaster was systematically surrounded. Thrall's elemental earth-shocks shattered Molgeim's defensive wards, allowing Lady Liadrin and other melees to push deep into range.
Within minutes, Molgeim's core cracked under sustained paladin judgments. As Molgeim fell, the remaining energy from both fallen masters coalesced into Steelbreaker.
The second transition was brutal.
Steelbreaker swelled to twice his original volume, his very aura distortion bending the light around him. Every strike from the giant now carried the catastrophic weight of all three Iron Assembly masters combined.
"Full healing protocols! Everything you've got!" Lady Liadrin commanded, her voice ringing across the sanctuary.
Steelbreaker smashed his fist downward in a desperate Supercharged Ground Slam. The entire room shook violently. Columns crumbled, and stone debris rained from the vaulted ceiling. But the alliance lines held. Pushed to their absolute limits, the tanks rotated their ultimate defensive abilities, while the healers cast in absolute unison, matching every devastating wave of electrical death with golden surges of life.
Slowly, inexorably, Steelbreaker's health pool drained.
Cracks spider-webbed across his massive chest piece. Internal gears ground together with horrific screeching noises. The intelligence driving the giant attempted one final, desperate Overload, but the combined fire of fifty elite arc-casters pierced his core before the spell could realize.
With a thunderous, echoing crash, Steelbreaker toppled forward, slamming onto the shattered floor of the hall.
Silence fell over the chamber.
The quiet that followed was absolute, heavy, and thick with the tang of ozone, burning iron, and spent magic. Mortal soldiers leaned heavily on their weapons, panting, their armor scorched and bruised, but alive.
Harbinger Vurenn immediately began traversing the ranks. The old draenei touched the foreheads of soldiers, priests, and commanders alike, his glowing eyes scanning for the insidious mental threads of Yogg-Saron's influence.
"Clean," Vurenn murmured, moving past a group of Kirin Tor mages. "Clean... clean..."
He stopped before Brann Bronzebeard, lingering longer than usual. His eyes narrowed slightly as he observed the dwarf.
Brann shifted uncomfortably under the prolonged gaze. "What? Is there a void-spider living in my beard?"
"You were thinking about something the corruption finds useful," Vurenn said gently, his tone laced with heavy wisdom. "Your enthusiasm, scholar. Your intense, consuming focus on the fascination of this place at the total exclusion of its lethality. The Old God reaches through gaps in awareness."
Vurenn laid a hand softly on Brann's shoulder. "Be enthusiastic, Master Bronzebeard. But be aware."
Brann opened his mouth to offer a defensive quip, then glanced over at Muradin.
Muradin was watching him with a tired, solemn expression—the look of an older brother who had spent a lifetime worrying his brother's curiosity would one day be the death of them both. "The mystic's right, lad. Keep your head on a swivel."
Brann swallowed his pride, adjusting his leather pack strap. "Right. Point taken."
Without waiting for further scolding, Brann marched toward the far archway of the Assembly hall, stopping precisely at the threshold without crossing it—a deliberate display of newfound caution.
He peered out into the vast, open space beyond. "Well... there's something rather massive immediately outside this exit."
Leylin walked up beside him, gazing into the vast expanse. "Yes."
"Something exceptionally large," Brann added, blinking slowly.
"Very," Leylin confirmed.
Beyond the threshold lay the Shattered Walkway—a grand Titan bridge suspended over a dizzying, abyssal chasm. The central spans of the bridge were obliterated, reduced to jagged chunks of stone floating in mid-air or fallen into the gloom below.
And standing in the center of the breach, blocking the path into the deep interior, was Kologarn.
The titan giant was colossal. The term 'giant' felt utterly inadequate; he was a living mountain of stone and iron. His massive torso rose directly out of the broken walkway, his colossal stone arms rested along the edges of the chasm, each fist large enough to crush a siege tank. Runes of ancient titan power flared along his stony shoulders, glowing with a tainted, sickly yellow light that signaled Yogg-Saron's corruption.
Brann let out a low, breathless whistle—a sound of sheer, unadulterated awe.
Muradin stood beside his brother, resting his warhammer against his shoulder as he stared up at the mountain of stone. "Aye," the dwarf general muttered softly. "That's a big one."
Kologarn had not yet shifted his gaze down toward the archway. His giant stone face remained staring forward into the mist, his sensory arrays idle.
"We have roughly forty seconds before his detection perimeter picks up our movement at this end of the bridge," Leylin said softly, his eyes already calculating vectors and cover points along the broken masonry. "Form up. Ranged on the ledge, melee prepare for bridge-crossing maneuvers."
The strike force moved with practiced, quiet efficiency, spreading out along the threshold.
Across the chasm, the titanic stone guardian remained motionless—a monument of iron and stone waiting for the final intruding step.
Leylin drew his weapon, his gaze fixed on the titan giant.
"Time's up," he whispered, and stepped onto the shattered bridge.