The junction felt fundamentally different after Hodir. Leylin registered the shift through his spatial-monitoring network not as a measurable numerical change, but as a qualitative transformation in the ambient magical field.
The oppressive, directed cold that had choked the right corridor since their arrival had vanished, replaced by the clean, neutral chill of natural winter air. Hodir's liberation had fundamentally altered the spiritual baseline of the nexus.
While the corruption in the remaining three corridors still hummed with dark intent—the crackling static of Thorim's domain, the stifling organic pulse of Freya's halls, and the erratic, high-frequency whine of Mimiron's mechanical fortress—the removal of Hodir's pressure revealed just how heavy the psychological weight had been.
Leylin granted the strike force a strict three-minute operational pause in the center of the junction.
Not for rest—they had fully recovered their endurance in the Observation Ring—but for the clinical, post-engagement triage that elite forces required: resetting cooldowns, checking structural armor integrity, and allowing the Harbinger to sweep the ranks for lingering corruption.
"Clean," Vurenn announced, finishing his mental circuit with his usual clinical precision. "Hodir's frost attempted to establish secondary access nodes inside three members during the climax. The psych-links failed. The cold tried to isolate your cognitive channels to break collective coherence, but knowing the vector was enough to neutralize it."
The Harbinger's glowing eyes settled on Tyr'ganal, Liadrin, and Vereese. Each acknowledged the warning with the brief, disciplined nod of seasoned veterans who processed operational data without flinching.
"Thorim's corridor is next," Vurenn said, turning his gaze toward the forward-left approach. "The atmospheric signature here is entirely different. It isn't isolation; it's the resonance of absolute loss. Grief. The corruption didn't just break Thorim—it anchored itself directly into an old psychological wound. If anyone in this force carries unaddressed grief—recent, or ancient, or the specific sorrow of this campaign—the corridor will exploit it. You cannot purge this vulnerability before stepping inside. You can only acknowledge it."
Leylin stood in silence.
He thought back to five long years of watching from the frozen cliffs of Dragonblight. He thought of Dranosh Saurfang's broken body at the Wrath Gate. He kept his silence—not because the grief wasn't there, but because voicing it would waste the ticking clock.
"Know it," Leylin told the group, his voice cutting through the hum of the portal. "Keep knowing it while we are inside."
Thorim's inner chamber was an architectural monument to compressed devastation.
The vaulted stone ceiling was high and secure, built by the Titans to withstand cataclysms, but the space between the floor and the roof thrummed with a heavy, unstable electrical charge. It tasted of ozone and copper—the concentrated, furious potential of a living storm that had nowhere to go because the entity wielding it had spent ten millennia channeling that fury into the service of an Old God.
The chamber was cleanly divided into two distinct tiers. Below lay the massive arena floor where the vanguard would fight; above, separated by a sheer stone barrier and a winding ascent, sat the upper platform where Thorim waited.
He did not look like a prisoner bound in ice. He sat upon a massive stone throne, perfectly still, his eyes fixed on the middle distance with the empty, agonizing focus of a being whose entire existence had been hijacked by a singular, crushing memory.
Then, the strike force crossed the threshold.
Thorim's head snapped up. The corrupted cyan light in his eyes flared, and his voice boomed across the chamber, amplified by the raw kinetic force of the storm itself.
"Foolish mortals. You dare to challenge a servant of Yogg-Saron? You shall suffer the same fate as all the others who have sought to undermine the will of the Old One. Prove your worth, Champions. Only then will you be granted a moment of my time!"
It was a ventriloquist act—the words were spoken by the Titan-forged Keeper, but the cadence, the bitter cruelty behind the delivery, belonged entirely to the Thing beneath the earth.
Below the throne, the side gates slammed open. Waves of iron vrykul—the Aesir defenders who had once been Thorim's loyal mortal arm—poured into the arena in disciplined, military formation.
"Upper team, move!" Leylin barked.
This was the core challenge of Thorim's hard mode: a brutal, dual-track tactical race. The arena team had to hold the line against wave after wave of elite vrykul defenders, while an elite strike team fought their way up the treacherous gauntlet passage to reach Thorim's platform. If the arena defenders fell, the raid was overrun. If the gauntlet team took too long, the door locked permanently.
Leylin assembled the upper team instantly: Alleria, Sylvanas, Tyr'ganal, Rhonin, Brann, and a squad of four elite Kirin Tor battle-mages.
Muradin looked across the room, caught Leylin's eye, and gave a sharp nod.
"Arena," Muradin rumbled, hefting his storm hammer.
"Arena," Leylin confirmed.
The upper team vanished into the steep, winding stairwell. Alleria took the point, her ranger senses tracking magical tripwires, while Sylvanas covered the rear flank. Rhonin and Tyr'ganal readied counterspells for the caster-heavy defenders lurking in the passage, and Brann marched right behind them, his satchel rattling with archaeological tools as he scanned the ancient Titan wall-conduits.
Down in the pit, Muradin, Yaala, Thrall, Liadrin, Jaina, and the core veterans braced for impact.
Leylin remained mobile, sliding between the upper observation ledges and the arena floor, using the spatial monitoring network to command both fronts simultaneously.
The first wave of Aesir defenders crashed into Muradin's defensive line with terrifying discipline. Even corrupted by the shadow, their military training remained intact; they moved with the lethal, geometric precision of soldiers who had designed the very arena they were now trying to slaughter the raiders in.
Muradin met them head-on, his iron boots sliding across the blood-slicked stone as he slammed his shield into the lead vrykul's chest.
In the center of the ring, Lady Liadrin planted her standard of the Holy Light, establishing a stable healing zone that pushed back against the oppressive atmospheric pressure radiating down from Thorim's throne.
Thrall stood near the edge of the pit, his eyes glowing with elemental fire.
"The storm here..." Thrall muttered, his voice carrying over the clash of steel. "It's closer to its raw, natural state. The corruption has chained Thorim's power, but it hasn't severed the elements from their root. I can bend this."
"Use it," Leylin ordered.
Thrall raised both hands. The lightning that answered his call was not the weak, distorted spark of a compromised shaman, but a blinding, roaring sheet of pure elemental fury. It tore through the advancing vrykul ranks, sizzling against their iron plate with earth-shattering concussive force.
At the three-minute mark, the first progress report pulsed through Leylin's tactical network.
The upper team has cleared two of the four gauntlet defense points.
Alleria's group was moving at maximum sustainable velocity, but the narrow, trapped geometry of the stairwell heavily favored the defenders. Worse still, Brann had just flagged a major environmental hazard: a massive Titan lightning conduit that the corruption had hot-wired into an automated perimeter defense system.
"Rhonin!" Brann called out over the din of battle, pointing frantically to a glowing power junction embedded in the stonework. "The runes indicate a frequency-modulation loop! If you don't disrupt the primary node, that conduit is going to fry every last one of us the moment we round the next corner!"
Rhonin didn't hesitate. With a flick of his wrist, a concentrated lance of pure arcane energy slammed into the node, short-circuiting the rune-lock with a sharp, blinding crackle of violet light.
The corridor went silent of automated traps. The pace instantly accelerated.
Back in the arena, the pressure spiked violently.
A massive, armored elite—an Evoker of Thorim—surged through the side gates at the four-minute mark, its hands glowing with a suffocating, violet aura. It threw a heavy Runic Shield over the remaining vrykul infantry, rendering them completely immune to physical damage.
"Jaina!" Leylin commanded.
Jaina stepped forward, her staff blazing with deep sapphire light. She didn't try to brute-force the barrier; she targeted the specific vibrational frequency of the Old God's ward, stripping the shield away in a single, surgical pulse of arcane disassembly.
Muradin didn't waste a millisecond. His warhammer flashed through the air, shattering the unshielded elite's chest plate with a sickening crunch.
Vurenn materialized beside the falling Evoker, his dark tendrils probing the dying creature's aura. "The shield wasn't the vrykul's magic," Vurenn said flatly. "Yogg-Saron is actively managing this arena in real-time. It knows Alleria's team is nearing the summit."
Five-minute mark.
Alleria's team hit the fourth and final gauntlet checkpoint—a massive, heavily guarded bulkhead blocking access to Thorim's private platform.
It was a brutal final test. But the strike team had dialed in their synergy across the previous three battles. Tyr'ganal's rapid-fire interrupts locked down the enemy spellcasters, Sylvanas and Alleria rained shadow and fire into the vanguard, and Brann expertly disabled the final security seal by hammering a wedge into a Titan gear-tooth.
The heavy stone doors gave way with a deafening groan.
Six-minute mark.
Thorim saw them emerge onto the upper ledge.
The corrupted Keeper froze. For a fraction of a second, the wild storm in his eyes flickered, as if the sheer presence of mortal interlopers had punched through a layer of the shadow's fog, reminding him of what he once was.
Then, the combat system overrode his consciousness entirely.
Thorim raised his mighty hammer, calling down a devastating Storm Hammer directly onto the arena floor. The atmospheric pressure dropped so fast that ears popped across the room.
Leylin didn't try to block the blow—it was physically impossible to absorb an impact of that magnitude head-on. Instead, he dropped into a deep stance, his hands weaving complex geometric patterns of water and thermal energy, catching the shockwave in mid-air and violently redirecting its kinetic dispersal outward into the empty corners of the hall.
The floor shuddered violently, but the raid held.
From the upper platform, Alleria's team opened fire. Rhonin unleashed a furious barrage of arcane artillery, while Tyr'ganal disrupted the Keeper's casting cycles. Alleria and Sylvanas drove a storm of enchanted arrows straight into Thorim's armor plates.
From the arena floor, Leylin pushed every ounce of his remaining thermal magic straight upward, launching a roaring pillar of black-crimson fire into the elevated platform.
It was an elemental war of attrition—storm against fire, raw sky against raw heat, fought across two vertical tiers of ancient stone.
The air grew blindingly bright. The temperature swung from freezing hail to scorching plasma within a heartbeat.
With a final, earth-shaking roar, Thorim's grip on his weapon failed.
The enormous Keeper staggered backward, his massive boots sliding across the stone platform before he dropped heavily to one knee. The violent tempests swirling around his shoulders abruptly died out, and the crushing static in the air evaporated into a soft, cool mountain breeze.
Silence descended upon the hall.
For a long moment, the only sound was the heavy breathing of the exhausted survivors.
Then, Thorim rose.
He didn't rise to fight. He stood slowly, straightening his magnificent plate armor with the quiet dignity of a sovereign waking from a decades-long fever. When he lifted his head, the corrupted cyan glow was gone. In its place burned the clear, stormy blue of a true Titan-forged custodian.
He looked down at Alleria's team on the upper ledge, then cast his gaze across the bloodied arena below.
"The chains... are broken," Thorim said. His voice was deep, resonant, and entirely free of malice—the pure sound of the sky speaking through a willing voice. "I was aware. From the very beginning, trapped behind my own eyes, forced to watch every atrocity committed by my own hands, utterly powerless to stop it."
He closed his eyes for a long, heavy moment.
"What I could see, and what I could not prevent... is the oldest agony known to the creators."
Leylin stepped forward, his masked face tilted upward toward the platform. "The others?"
"Hodir is free—I can feel his winter returned to its natural balance," Thorim said, turning his gaze toward the eastern wing. "Freya and Mimiron remain. But know this: what the corruption did to Freya is far deeper than what it did to us. Her soul is woven into the very fabric of the living world; the shadow didn't conquer her—it weaponized her love. Returning her to herself will not be a matter of brute force."
He paused, his expression hardening.
"And Mimiron... Mimiron will not be freed by combat. The shadow didn't break his mind; it gave him a problem so complex, so terrifyingly fascinating, that his curiosity consumed him. To Mimiron, this entire tragedy is merely a magnificent experiment."
"The button," Brann blurted out, unable to contain himself any longer.
Thorim looked down at the dwarf with a faint, wry smirk. "He told you about the self-destruct button, did he?"
"The inscriptions mentioned it," Brann said quickly, adjusting his spectacles.
"Be adequately prepared," Thorim warned, "for whatever happens when someone actually presses it."
Leylin gave a curt nod. "When we have all four, what is needed for the final threshold?"
"The Keepers were designed as a singular, interlocking architecture," Thorim explained, stepping down from his throne as blue lightning crackled harmlessly around his gauntlets. "None of us possess our full power in isolation. Together, we can unlock the final defenses of Yogg-Saron's prison and strip away the layers shielding its core."
"Then we move," Leylin said, turning back toward the portal nexus. "Freya and Mimiron are next."
Thorim raised a hand in farewell, the storm in his eyes now burning with a protective, righteous fire. "Go quickly. The Beast beneath us knows you are here. Every second you spend in these halls is a second it uses to sharpen its final teeth."
Brann lingered for a moment, staring up at the Keeper as if trying to memorize twenty different historical footnotes at once, before Muradin grabbed him by the scruff of the neck and hauled him back toward the corridor.
The junction awaited. Two Keepers down. Two to go.