The Apparatus of Severance is the machine the Tolarian mage-kings built to take magic apart. People who have heard the name secondhand imagine it as the city of Elderran itself, a whole ruin somehow rigged into one device. That is wrong, and the distinction matters to anyone who means to reach it. The Apparatus is a single structure at the dead center of the capital. Elderran was built around it. Everything the region suffers, the slowed time worst of all, radiates outward from that one engine, and the engine is still where it has always been, doing what it was made to do. The Faewoods are its other great wound: the severance meant to cage the Faesong tore it loose instead, and where the freed song pooled thickest it has never since stopped condensing into fae.
The engine
The Apparatus is a tower of crystal grown rather than cut, a column perhaps three hundred feet across at the base and rising into the central spire that Velorax the Unfinished hangs frozen above. It is not one crystal but thousands, fused into facets that meet at angles the eye cannot quite hold, each facet a conduit for a leyline the mage-kings dragged in from across Old Tolaria and bound to the structure. The conduits glow from within, faint and shifting, the color of light seen through deep ice. Down the throat of the tower run the planar anchors, shafts of the same crystal driven straight down into the Izzus seam, the time-layer of the Elemental Planes. That is the wound the whole catastrophe turns on. The mage-kings meant to seize the local flow of time and hold it as a thing they could set. Instead the anchors tore the seam, the way a school of Vyanoweir cartographers had once torn it beneath the Plains of Oblivion, only far wider, and the tear has never closed.
The engine makes no sound that carries. The closer you come, the slower its sound reaches you, until at the base a single tolling note seems to take an hour to finish. The crystal is warm. People expect cold and find warmth instead, blood-warm, like standing against the flank of something asleep.
Its operators
The Apparatus was never meant to run untended. It was built to be steered, balanced, corrected, a machine of seven generations' knowledge that took a council of the highest adepts to hold in tune. When the activation went wrong, the mage-kings did not flee. They were at their stations, reaching for the corrections that would save it, when the time-tear caught them and the local hour at the center dropped toward a standstill.
They are still there. The dilation that strands the whole region is most extreme at the heart, and at the heart it is close to total. Caedran, the last mage-king and the engine's chief architect, the one who gave the order to activate, is frozen at the central nexus with his hands on a mechanism he was in the act of adjusting. He is conscious. So are the others caught with him. They have lived every fraction of the disaster in slow motion for centuries, the same way Velorax has, and like her some of them are no longer sane. In the strictest sense the Apparatus has operators. They are simply operators who can no longer move, working a control they will never finish turning, and whatever the engine does now it does without their consent.
I gave the word. I have been taking it back ever since, and the word has not yet finished leaving my mouth. — Caedran, last of the Tolarian mage-kings, heard in the minds of those who reach the heart
Reaching it
The staged dilation of the journey into Elderran belongs to the account of the city. What belongs to the Apparatus is the last stretch, where the city's strangeness becomes the engine's. Within the final hundred yards the ordinary relation of inside and outside inverts completely. The world races. You crawl. A traveler at the base of the tower can watch towers crack and rebuild and crack again at their proper speed, can watch Velorax breathe out fire in real time overhead, while a single step of their own takes what feels like the better part of a day. The few who have reached the engine and come back report living through decades at the heart, the whole long collapse and the automatons' endless rebuilding, and emerging to find that minutes passed for the friends who waited outside.
No one has touched the central nexus and returned to say what is there. The mage-kings' own records, scattered through the vaults of the dead city, hold the only full account of how the Apparatus was meant to work, and so the only plausible account of how it might be stopped. The same records would serve equally well as the plans for a second one.
It still runs
The Apparatus cannot safely be shut off. The mage-kings designed it to sustain itself through the long work of severance, and the partial, broken version of that work is exactly what it continues to perform. Century by century it completes the separation it was built for, a fraction at a time, and the magical instability bleeding outward across Alaria can be traced in part to its endless operation. The reckoning is grim and specific: within roughly another century the engine finishes, and a finished severance is worse for the world than the unfinished one has ever been. Stopping it means reaching a nexus no one has reached and living. Until someone does, the engine keeps its own slow time, and the men who built it keep failing to turn it off.