The Time law's cost was still settling through his channels when he made the calculation: he could not be the team's anchor against everything the dungeon was going to escalate to and still arrive at the Lich-Warden with adequate reserves.
He needed a buffer that didn't draw on his own mana.
Go, he sent through the bond. Take the pressure off them. Don't clear the corridor — let them earn the ground. Just don't let them get overrun.
Nagini's response was the impression of agreement layered with something that was almost amusement at being given a task this far beneath her capability.
She detached from his shoulder and moved into the corridor with the specific fluid quality that meant she was not bothering with subtlety. Her tail swept through a cluster of advancing warriors, the kinetic transfer shattering necrotic-iron bone structures into grey fragments. She was not killing efficiently so much as she was redistributing pressure — clearing the immediate threat to the team's flanks without removing the engagement entirely, exactly as instructed.
The team's formation found its footing with the buffer in place.
The dungeon escalated in response to the intrusion, which was the specific behaviour of a Tier 4 environment under an active Lich-Warden's management: the recursive hallways producing reinforcement waves rather than simply more of the initial threat type.
Skeleton Archers emerged from the elevated ledges, their corrupted-mana bowstrings sending black-feathered volleys toward the formation's centre.
Skeleton Mages followed from the deeper shadows, their chanted incantations producing localised gravity distortions designed to disrupt positioning rather than deal direct damage — the dungeon's tactical layer, addressing the formation's coordination rather than its individual members.
Skeleton Knights arrived last, mounted on skeletal steeds, their mass and weight class a genuine threat to the shield wall's structural integrity.
Rosanne read the escalation and made the call.
She planted her staff's base against the obsidian floor — the crystalline sun-core flaring with the specific intensity of a light practitioner committing her offensive reserve to a support application rather than holding it back.
"Hold the line," she said, which was the entirety of what needed saying.
The shockwave of light-element mana that moved through the team was a buff application she had been refining since the Boston Trio match two years earlier — strength, agility, and mana-recovery enhancement that temporarily closed the gap between Tier 3 baseline and Tier 4 demand. Mika, Jessica, and Donna registered the increase immediately, their engagement quality shifting in response.
Rosanne followed the buff with her own offensive contribution — light arrows, dozens of them, manifesting in the halo formation she'd developed and aimed with the specific accuracy that came from years of supporting a team rather than carrying one. Undead constructs were structurally vulnerable to light-element damage; the archers and mages caught in the barrage did not simply take damage, their necrotic cores burned away entirely, the constructs dissolving into ash.
He watched the synergy from the rear — Rosanne's buff amplifying the team's capability, Nagini's disruption managing the overflow, the formation holding against pressure that would have been genuinely dangerous to a Tier 3 unit operating without either contribution.
The Time law's cost was still present in his reserves. He held his position and tracked the Skeleton Knights' charge angle against Donna's reinforced shield line, calculating without intervening, because the team did not need intervention yet.
The recursive corridors gave way to the boss chamber's threshold without warning — the specific architecture of a dungeon designed to deny the team the orientation cues that would let them anticipate the transition.
Four Skeletal Horsemen guarded the rune-carved boss doors.
Tier 4 elite guardians, necrotic-iron armoured, mounted on steeds that exhaled a freezing miasma that drained ambient mana on contact. The coordinated vanguard configuration was not a coincidence; the Lich-Warden had positioned its strongest reinforcement at the chamber's entrance specifically to break momentum before the boss encounter could begin on the team's terms.
The charge began the moment the team crossed the threshold.
He read the charge's trajectory and made the assessment immediately: four combined Tier 4 cavalry units, moving at the velocity their charge had built, would not be stopped by Mika and Donna's shield wall. The kinetic mass exceeded what the formation could absorb.
This was the intervention point.
He moved to the formation's front — not the Time law, which his reserves weren't ready for again, but the spatial law's primary expression, the technique that cost him essentially nothing at full comprehension.
He read the four trajectories and applied four separate, precise spatial folds.
The leading two horsemen's lances, mid-charge, passed through localised spatial discontinuities and arrived not at the shield wall but at the flanks of their own companions — the geometry of the charge redirected without any of the riders perceiving the redirection until their own lances found unintended targets.
The remaining two riders he addressed differently: increased spatial pressure across their immediate coordinate space, pinning their mounts to the stone floor with the specific weight that compressed coordinate relationships produced. Not destroyed. Immobilised.
The unified charge that should have broken the formation's momentum arrived instead as four isolated, partitioned targets — the horsemen separated from each other and from their coordinated advantage, each one now a manageable individual engagement for the team to address.
He had not taken any of the kills. He had simply made the engagement survivable on the team's own terms.
He considered, briefly, whether the Gravitational Convergence would have resolved this faster.
It would have. It also would have been the wrong tool. The technique's coordinate-collapse effect was not selective at this chamber's scale — a convergence field strong enough to address four Tier 4 elites simultaneously would not discriminate between the horsemen and the team's own positions relative to the chamber's structural integrity, and the local ley lines beneath a boss chamber were not material he wanted to be testing a coordinate collapse against with his team standing on the same floor.
Precision over scale, when the scale wasn't required. That was the correct calculation, and he was not interested in being lazy about it just because the larger tool existed.
He held the spatial folds in place and watched the team work through the isolated horsemen one at a time — Donna's wind disrupting the immobilised steed's balance, Jessica's lightning finding the gaps in the armoured riders' joints, Mika's frost locking each engagement down once the structural weakness was exposed, Rosanne's light finishing what the others opened.
The fourth horseman crumbled into ash under the combined assault.
He released the spatial folds.
The chamber settled into the specific quiet that followed a hard-won engagement — the team breathing through the exertion, Nagini coiling back toward his shoulder with the satisfied quality of a practitioner who had done useful work without needing to be impressive about it.
Ahead, the rune-carved doors marked the Lich-Warden's chamber.
He looked at the team. Reserves drawn down but functional. The buff's residual effect still partially active. The illusion-navigation training had held through the recursive corridors without a single disorientation event, which was the part of the mission he had genuinely been here to evaluate.
"Five minutes," he said. "Recover what you can. The Warden is on the other side of those doors, and it's not going to give us the courtesy of an open approach."
They took the five minutes.
He used it to assess his own reserves against what the Time law's earlier cost had taken, and concluded that whatever happened next, he was going to need to manage it primarily through the spatial law.
The Time law would have to wait for a context that wasn't a live Tier 4 boss encounter.
He filed that conclusion and waited for the team to be ready.