He did not wait. This was not impatience — it was the clear assessment of someone who understood the situation's timeline better than anyone else in the citadel and who had determined that waiting was the variable most likely to produce the outcome he had spent five years trying to prevent.
The groups were still in their respective halls. They were winning. They would finish. They would ascend. The question was what state things would be in when they arrived at the summit.
He preferred to have already begun. The stairs above Sindragosa's chamber were different from the stairs below it — not architecturally, not in the physical material of their construction, but in the specific quality of what they were ascending toward.
The Lich King's presence had been a constant pressure since the Upper Spire's entrance, a directed weight that the summit's approach now converted from ambient to specific, the difference between feeling the presence of something vast in the general sense and moving toward the center of that vastness with each step reducing the distance between them.
He felt it with the calm, registered quality of someone who had been in continuous proximity to the Lich King's power. Arcturis moved beside him, and the spirit bear's presence had the grounding warmth that had been the settlement's constant companion.
The Frozen Throne was what he had understood it would be and was also something that understanding had not fully prepared him for.
Arthas sat on the Frozen Throne. Or — Arthas had been sitting on it. In the specific moment that Leylin crossed the chamber's threshold, the Lich King rose.
Not quickly. Not with the immediate, combat-ready urgency of someone responding to a threat. Slowly, in the deliberate way of someone who has been waiting for something to arrive and who is marking the arrival's significance through the quality of the response they give it.
The Helm of Domination's dark radiance pressed against the chamber's cold illumination as Arthas rose to his full height, and Frostmourne's cold blue light activated with the ambient, continuous quality of a weapon that was always, at some level, expressing what it was.
The death knight looked at him across the area. For a moment, within the area was simply the two of them — the person who had made a decision on a glacier five years ago, and the thing that decision had preserved and restored and watched across five years of patient, cold patience.
"You came," Arthas said. His voice had the same quality it had always had — the flat, affectless register of a person who had resolved their relationship to every variable that generated emotional tone in a voice and had found, in the resolving, a quality of pure, cold information delivery that contained nothing beyond what it chose to contain.
"I said I would," Leylin said.
"Five years ago," Arthas said, "you stood on the glacier and made a choice." He descended from the throne's dais with the unhurried quality of someone not in a hurry because hurry was not a category that applied to their relationship to the situation.
"You returned what you had taken. You calculated that what I represented was preferable to what my absence would produce." The flat gaze found him with the full, comprehensive attention of something that had been thinking about a single problem for five years and had arrived at very complete thoughts about it. "Do you regret it?"
The question arrived with the quality of genuine inquiry — not the tactical deployment of a vulnerability the Lich King hoped to exploit, but the flat, honest question of something that had been thinking about this calculation and was, in some cold sense, curious about the answer the person who had made it would give.
Leylin looked at him across the chamber.
"No," he said. "The choice I made was correct. The world needed time it would not have had otherwise. It had it." He held the flat gaze with the specific directness of someone who was not performing confidence but was genuinely, honestly assessing the situation and conveying the assessment accurately.
"And I have already defeated you once." He paused. "I can do it again."
Something moved in the flat, affectless quality of Arthas's expression — not the dramatic, emotional register of pride wounded or fury triggered. Something colder, the particular quality of a thing that has received an answer and has filed it alongside everything else it has been accumulating and has updated its assessment accordingly.
Then the Lich King spoke, and his voice was no longer the flat, conversational quality of the question that had preceded it — it was something that used the voice as a carrier for the specific, resonant authority of the Helm of Domination at full expression, the death knight's declaration arriving with the weight of everything the throne connected him to behind every word.
"You'll learn of that firsthand. When my work is complete, you will beg for mercy — and I will deny you. Your anguished cries will be testament to my unbridled power!"
Frostmourne rose. The first exchange established the distance between this fight and the glacier.
The glacier had been Arthas at his restored level — genuine, significant, the full expression of what the Helm and Frostmourne and the Lich King's authority produced in a death knight who had been their champion since before the Scourge's first assault on the Eastern Kingdoms.
Leylin had fought it with Illidan's assistance, with the unit's contribution, with the accumulated workings of an extended engagement that had built the conditions for the conclusion.
This was Arthas in the citadel. At the citadel's summit. On the Frozen Throne's platform, where the concentrated connection between the Lich King and the throne's organizing power was not the attenuated, distance-limited connection of the glacier's engagement but the immediate, fully-expressed connection of something operating in direct contact with its source.
The difference was the difference between a river downstream and the river at its origin.
Frostmourne's first arc came with the speed of the glacier but the force of the throne — the death knight's attack carrying within it the additional weight of something that was not drawing on the Helm and the blade alone but on the full, concentrated power of everything the throne connected them to.
He read it through the attacks with his familiarity on Arthas's attack signatures — five years of monitoring every observable expression of the Lich King's power — and he moved before the arc completed.
The earthbending that met the arc's follow-through was different from the glacier's barriers. The citadel's saronite-infused stone resisted, yes — he knew the resistance, had been working against it since the main door.
He knew where the resistance was thinnest. He knew the force concentrations in the construction that amplified application rather than resisting it.
The barrier he produced was smaller than the glacier's equivalent. It was also more precisely placed, and precision at this level was worth more than scale.
Frostmourne hit it. The barrier held for the two seconds it needed to hold. He was already building the fire.
The fire hit Arthas with the force that the development had produced. Arthas absorbed it through Frostmourne's consuming nature and through the throne's specific, enhancing connection — the blade's cold meeting the fire's heat in the specific, consuming exchange that Frostmourne was built to conduct, the thermal energy feeding what it had been designed to feed.
But more reached through than the glacier had allowed. The death knight moved — the efficient repositioning of a fighter whose assessment of incoming force had determined that absorption had a limit and that the current expression was approaching it.
The move was real and it was accurate and it was exactly what Leylin's read of the Lich King's decision-making had predicted the impact would produce. He had built the earthbending working while the fire was in transit.
The floor beneath Arthas's repositioned stance shifted with the precise disruption of someone who had read the repositioning destination before the repositioning completed.
The footing destabilization was smaller than the glacier's equivalent. The precision was greater. And at this level of engagement, at the summit of Icecrown Citadel with the Frozen Throne's power available to the Lich King and five years of accumulated capability available to him, precision was the variable that everything else resolved around.
Arthas corrected. He produced ice. The waterbending against the Lich King on the summit was a different experience from the glacier's engagement.
On the glacier, the ice had been the environment — the ambient substrate of a frozen expanse that his earthbending had worked with in the specific way of something working with a medium it understood. At the summit, the ice was Arthas — the death knight's expression of the Lich King's frost power at its most direct, most connected, most fully supported by the throne behind it.
Ice from the throne had a quality that ambient glacier ice did not. It was organized. It had intention behind it at the level of the organizing intelligence that had been building the Scourge since before the Third War, and that intention expressed itself in the directed quality of frost that knew where it was going and why.
He redirected it. Not blocked — the waterbending's specific capability against frost was not the blocking of something that possessed the throne's full connection behind it. The redirection of it, the molecular-level influence on the directional quality of organized ice that the waterbending's intimate relationship with water in all its forms produced.
The frost intended for him arrived at the angle he had redirected it toward rather than the angle Arthas had aimed it from. The redirected ice hit the space near the stairs and added itself to the citadel's construction.
Arthas's flat gaze tracked the redirection with the quality of something encountering a response it had not anticipated and was filing with the immediate, comprehensive accuracy of an intelligence that did not experience surprise in the conventional sense but that did register new information and update its model.
He was adjusting. Leylin moved before Arthas could adjust and produced its next output.
The air came next — not the atmospheric pressure manipulation of the lower floors' engagements, not the combat-support airbending of an engagement where the airbending was one tool among several.
The air hit the Lich King with the compound, layered force of something that was simultaneously affecting the atmosphere between them, the oxygen available to Frostmourne's frost-production mechanism, and the directional quality of the frost that Arthas was building toward the next expression.
Frostmourne's frost working arrived diminished — not stopped, not prevented, but diminished in the meaningful way that diminishment at this level of engagement was meaningful.
He took the diminished working and converted it. This was a risky application — the waterbending's ability to work with water in all its states, including ice, applied to the incoming frost in the immediate contact of its arrival, redirecting the frost's organized intention against its own source by finding, in the ice's organizing structure, the directional quality that Arthas had built into it and reversing that direction.
The ice that had been aimed at him arrived, briefly, at Arthas. The Lich King destroyed it with Frostmourne — the blade's consuming nature applied to ice the same way it was applied to fire, the consumption complete and immediate.
But the consumption had required a moment, and the moment had required Frostmourne's attention, and Frostmourne's attention on ice was not Frostmourne's attention on the fire he was building in the moment.
"Frostmourne hungers!" The blade swung in the fully-expressed arc of a death knight whose patience had reached its operational threshold — not anger, not the emotional escalation of a living fighter pushed past composure, but the cold decision of something that had assessed the exchange's development and had determined that the next phase required more direct application rather than the measured, evaluating quality of the first exchanges.
He moved with everything available. Not the strategic, reserve-managing movement of an engagement that needed to sustain itself — the full, committed acceleration of someone who had assessed that this specific, convergent moment was the moment that reserves were for.
Blazing Speed carried him out of Frostmourne's arc in the impossible-seeming way of a mage. He was behind Arthas before the arc completed.
The fire he released from that position was the accumulated, fully-expressed version — not the strategic, stacking fire of the Deathwhisper encounter, not the burst-mode fire of engagements designed for elimination of multiple targets.
The concentrated expression of everything thermal that the engagement's development had seeded into the chamber's air, the environmental pull that his bending had been priming throughout every exchange, drawn together in the single, organized moment of its fullest possible combined expression.
It hit the Lich King from behind with the force, the tactical positioning of a combatant who had improved and become even stronger than before.
Arthas staggered. Not to his knee. Not the dramatic, decisive fall of a conclusive blow. But the genuine stagger of something that had been hit harder than it had expected from a direction it had not fully covered.
Frostmourne turned. The flat gaze found him, and what was in the flat gaze now was not the cold, evaluating quality of the first exchanges — it was the total quality of something that had arrived at full expression.
"You cannot stop what is to come."
The throne's power descended through the Helm with the full, connecting force of the Frozen Throne's organization behind it — not simply Arthas's capability, not simply Frostmourne's consuming nature, but the vast, ancient power of everything the Lich King's architecture connected to at its most fundamental level.
Leylin felt it arrive and felt, simultaneously, the chamber's door opening behind him. He had expected this. He pressed forward.
The fire and the earth and the water and the air came together in a single application that the moment required. The summit filled with light and frost and the fundamental, ancient cold of everything the Lich King was — and one person, standing in the center of all of it, refusing to move from the position he had chosen.
The battle was not over. But it had begun in earnest. He kept his eyes on Arthas, on Frostmourne, on the throne's cold light behind both of them, and fought.