Arthur wakes up to the sixth morning of living in the waste land.
Only to find that a mushroom has been growing through his pillow.
He stared at it. It was small, purple and faintly luminescent. It was also growing directly through the feather stuffing, which means it germinated three or four hours while he was sleeping. It had already developed a root system capable of penetrating fabric, stitching, and what Arthur was fairly certain was a wool blend.
"That's weird," He said.
He picked up his notebook from his bedside table which is just a crate with a cloth on top of it and added a new entry.
Mushroom spores in pillow. Unclear if spores were present in stuffing prior to arrival or introduced via ambient mana transfer. Purple bioluminescence suggests exposure to concentrated void-frequency mana. Note: check if pillow is still comfortable. Note: probably not.
He set the notebook down, swung his legs off the makeshift bed, and stepped onto the floor. The floor was dirt. Not because he had removed the floorboards, but because there had never been floorboards. The shack's previous occupant had apparently believed that dirt was an adequate building material for all surfaces, vertical and horizontal alike. Arthur had slept on a cot in a dirt-floored shack for five nights now, and his back had begun filing overwork complaints.
But the back pain was secondary, to the mushroom and the mushroom was secondary to the most worrying problem.
Water.
Arthur's forty acres sat adjacent to a river. He had chosen this plot specifically because of the river. A river meant water for irrigation, and irrigation meant he could expand his planting beyond the initial forty seeds. The seeds were doing fantastically already a foot tall now, compared to an inch when he planted them. their golden glow bright enough to read by at night but forty plants did not make a farm. He needed rows. Fields. Proper irrigation channels.
The problem? The river was green, which as anyone would deduce isn't safe to drink.
He needed water. He didn't water so much he would drink probably polluted water.
Arthur dressed, ate a piece of hardtack that had the structural integrity of dirt and roughly the same flavor profile, and stepped outside into the gray morning.
The Expanse looked the same as it always did. Bruise-colored sky. Flat, dead land stretching to the horizon in every direction. The mana storm he'd noticed on his first day had drifted south, leaving behind a faint crackling in the air that made his arm hairs stand on end. His fence eight posts, rough planks, chalk paint looked pitiful against the vast emptiness. Like a child's drawing of a barrier against an ocean of indifference.
He sighed.
And decided to not look at whatever mess his protection was and looked to the left.
His plants had grown exponentially.
Their golden light had intensified overnight. It pooled around the base of each seedling like spilled honey, seeping into the soil in slow, fractal patterns. When Arthur approached, the light pulsed, just slightly, as if the plants noticed him approach. He knew that he was anthropomorphizing. Contrast to popular belief plants do not acknowledge people. But the light pulsed, and it was very hard not to feel acknowledged.
He crouched beside the nearest seedling and pulled out his notebook. The leaves were broader now, with veins that traced delicate geometric patterns. The plant was channeling mana through its leaves the way a circuit channels electricity. Each vein was a conductor, each leaf a node, and the overall pattern was—
Arthur's pen stopped moving.
He stared at the leafed. He stared some more. Then tilted his head.
"Filtration array!" He screamed.
It was. Not a crude one like his fence. A *sophisticated* one. The leaf's vein structure was performing the exact same function as a high-grade mana purification crystal the kind the Guild used in their artifact analysis rooms, the kind that cost more than Arthur's annual salary for a single palm-sized shard but it was doing it organically. Passively. As a byproduct of photosynthesis.
He looked at his fence again and all the excitement disappeared from his face.
Once again he sighed. A sigh of disappointment.
The plant wasn't just absorbing mana. It was *sorting* it. Taking in the chaotic, mixed-frequency ambient mana of the Expanse, separating it into clean, ordered streams, feeding what it needed into its roots, and—
Arthur looked down at the soil.
—and expelling the unneeded byproducts.
The golden glow in the soil wasn't just light. It was purified mana. Waste product from the plant's filtration process, seeping into the ground and being further refined by the chalk in his fence paint, creating a feedback loop. The fence amplified the plant's output, the plant's output improved the soil, the better soil improved the plant's growth, which improved its filtration capacity, which—
"It's a self-sustaining optimization cycle," Arthur said out loud to himself. Not like anyone can hear him anyway.
He sat back on his heels. His hands were shaking slightly. Not from fear. From the specific, electric excitement that came from seeing a system that was working. Perfectly. Exceptionally. With an efficiency that no Guild artificer could designed because no Guild artificer would have even thought about using a flower as a mana filter.
Arthur had thought to use a flower as a mana filter. Or rather, he hadn't thought to do it. The flower did it on its own; he simply planted it in the right place.
He closed his notebook, took a deep breath of ash-filled air, and stood up.
He went towards the river.
It was even worse up close.
It was approximately thirty feet wide, moving at a lazy pace toward the southeast. The green glow was strong enough to cast shadows. The smell was complex: a base note of sulfur, a middle note of something sweet and rotting, and a top note that Arthur's brain politely filed under "a smell." Bubbles rose from the bottom at irregular intervals, each one releasing a small puff of vapor that shimmered and dissipated.
Arthur filled a glass vial with the river water and went back to his shack and held it up to the light. The water was opaque. Things floated in it. Some of the things were probably organic. Some of them were definitely not.
He pulled out his appraisal kit, a set of tools he kept from his Guild days. A monocle with a series of interchangeable lenses for mana-frequency analysis. A set of glass rods for testing reactivity. A small tuning fork calibrated to detect void-frequency contamination, which every appraiser carried and hoped never to use.
He tapped the tuning fork and held it over the vial.
It screamed.
Not vibrated. Screamed. A high, piercing shriek that made Arthur's teeth ache and caused the surface of the river to ripple in alarm. He dropped the tuning fork and clapped his hands over his ears. The fork hit the ground and continued screaming for another three seconds before going silent.
Arthur stared at it.
"Significant void-frequency contamination," he muttered, writing it down. "That's not good," He said again to himself.
The river was, by any standard measurement, lethal. Drinking it would kill a person in minutes. Touching it with bare skin would cause necrosis within hours. Bathing in it would be a profoundly bad idea that Arthur did not intend to detail in his notebook because some knowledge was better left unwritten.
but.
Arthur stared back at his plants, visible as a faint glowing light in the distance.
The plants filtered mana. Not just ambient mana from the air. The leaf structure suggested they could process mana from any source, provided the concentration wasn't high enough to overwhelm the filtration capacity. And the river was, essentially, a river of liquid mana. Poisonous, chaotic, void-contaminated mana, but mana regardless.
If he could get the river water to the plants slowly, in controlled quantities, the plants could purify it. The purified water could then be used for irrigation. The irrigation would expand his growing area. The expanded growing area would mean more plants. More plants would mean higher filtration capacity. A higher capacity would mean he could process more river water.
Another optimization cycle.
"All I need," Arthur said to the river, "is a way to move the water from here to there without touching it, breathing near it, or letting it anywhere near my skin, clothes, or belongings."
The more he thought, the more impossible it started to sound.
Until an idea popped into his head. The light bulb was also included.
Then he walked back to the shack, rummaged through his trunks, and pulled out a length of copper piping he'd bought at a market before leaving the Empire. He intended to use it for a rainwater collection system. Rainwater was safe. Rainwater was boring. Rainwater did not present an engaging engineering challenge.
Well, the poison river water was.
It took Arthur most of the day to build the irrigation channel.
He dug a trench from the river to the edge of his fence—a distance of about two hundred yards—using a shovel he'd found in the shack. The shovel had a crack in the handle and a dent in the blade that suggested it had been used to hit something that had hit back. Arthur wrapped the handle in cloth to keep it from breaking, and he dug.
The soil in the Expanse was strange. It was dense, almost clay-like, but it crumbled when you struck it hard enough, revealing a dark, rich underlayer that smelled faintly of metal. The mana in the ground made the shovel vibrate in his hands, a low, constant buzz that traveled up his arms and settled in his elbows like a dull ache. Every few minutes, the ground would shift slightly beneath him, as if the earth was settling into a more comfortable position.
He laid the copper pipe in the trench. Copper was conductive—both thermally and magically. It would carry the river water to his plants, but more importantly, it would serve as a preliminary filter. The metal would absorb some of the rawest, most chaotic mana before the water even reached the plants, reducing the load on the filtration system.
At the river end, he built a small intake box from stones and mud. It was ugly. It was lopsided. One of the stones had eyes on it, and he'd positioned it so the eyes were facing away from him because he found it distracting. At least it functioned. Water flowed into the box, through a basic sediment trap he'd constructed from gravel and cloth, and into the copper pipe.
At the fence end, he directed the pipe into a small basin he'd dug just inside the fence line, lined with more chalk-paint mixture. The idea was simple: river water enters the basin, plants in and around the basin filter it, clean water pools at the bottom, Arthur uses clean water for irrigation.
He opened the intake box. Green water gurgled into the pipe.
Slowly and steadily.
He waited.
The pipe hummed. The copper grew warm to the touch as it absorbed the chaotic mana. The water that emerged at the other end was slightly less green. Slightly. It was still the color of illness, still faintly luminescent, still bubbling with things that had no business being in water.
But it was in the basin now. And the plants were already reacting to it.
The seedlings nearest the basin leaned toward the water the way sunflowers lean toward the sun. Their leaves opened wider. The golden glow intensified. Arthur could see the filtration process happening in real time—the geometric vein patterns brightening, cycling, processing. The water in the basin shifted color. Green to yellow-green. Yellow-green to pale yellow. Pale yellow to—
Clear.
Arthur stared at the basin. The water in it was clear. Not just clear. *Crystal* clear. Clean enough to see the bottom of the basin, which was just packed dirt and chalk residue. Clean enough that the faint golden glow of the purified mana suspended in it looked less like contamination and more like sunlight caught in water.
He dipped a finger.
It was warm. It tingled slightly, the way carbonated water tingles, but pleasantly. He lifted his finger to his nose. No sulfur. No rot. No ominous top note. It smelled like water. Like clean, honest, unremarkable water.
He took a sip.
It tasted like the best water he had ever drunk.
Arthur sat down beside the basin and took a longer drink. Then he pulled out his notebook and began writing. Flow rate calculations. Filtration time estimates. Copper conductivity degradation projections. The plants' processing capacity seemed to scale with their growth, which meant the system would get faster over time. If he planted more seedlings around the basin, he could increase throughput. If he laid more pipes, he could bring in more water. If he—
A sound interrupted him.
It was faint. Distant. Coming from the other side of his disappointing fence.
Arthur looked up.
The mists at the edge of his property were shifting. Not the slow, lazy drift they'd been doing for the past six days. A deliberate movement. Something was pushing through them. Something large.
Then the mist parted, and a person fell out of it.
She was young—maybe twenty, maybe younger, it was hard to tell because she was covered in so much mud and blood that she looked less like a person and more like a crime scene that had suddenly chosen to walked away. She was wearing the tattered remains of what had once been a soldier's uniform. One arm hung at an odd angle. She was dragging a leg. Her eyes were wide, unfocused, and fixed on the golden glow of Arthur's plants with the desperate, disbelieving intensity of a drowning person who had just seen a rope.
She made it three steps past the fence line before her leg gave out, and she collapsed face-first into the dirt, exactly six inches from Arthur's tomato seedlings.
Arthur closed his notebook.
He looked at the girl. He looked at his plants. He looked at the girl again.
"Please don't crush the seedlings," he said.
The girl did not respond, being unconscious. Arthur sighed, set down his notebook, and went to find something to bandage her arm with. It occurred to him, distantly, that in six days of living in the Blighted Expanse, he had not once considered the possibility of other people. The Expanse was supposed to be empty. That was the whole point.
But the girl was here. And she was bleeding on his soil.
Which meant, Arthur supposed with a sigh that carried the weight of someone who had just realized his quiet life of plant husbandry was about to become complicated, that he was going to have to deal with this.
He found a relatively clean rag, knelt beside her, and began wrapping her arm.
He did not notice that the mists behind her were full of shapes. Dozens of them. Hundreds. Refugees, soldiers, deserters, and civilians, all of them fleeing the same war, all of them drawn by the same thing: a golden light on the horizon, visible even through the gray gloom of the Expanse, glowing like a beacon in the dark.
A beacon that said, quite clearly to anyone desperate enough to see it:
Something here is alive.
Arthur, of course, noticed none of this.
He was too busy making sure the girl's blood wasn't getting on his seedlings.