Burning cactus smelled like nothing that should exist. Acrid and oily, a chemical reek coating the inside of Chris's nose and making his eyes stream. He'd guessed something green, vaguely woody — wrong. The stench shifted as more cacti caught, adding layers of rubber and rotting vegetables until the air itself was a living thing, thick enough to choke on.
The cacti didn't burn quietly. They popped and hissed, splitting open with wet cracking sounds to vent steam and sap in short bursts. In their final moments the plants hurled that boiling fluid at the soldiers standing in front of the mages. The liquid burned through cloth and skin. Men staggered out of the steam, slapping at smoldering shoulders and arms, and their hesitation split the advance into two uneven streams.
Not much. But it slowed them, and slowing them was the whole point. The cost registered through the Rootmind as a low constant ache — his plants dying in bursts of heat and confusion, their determination cutting through the pain like a signal through static. They knew what they were dying for. Chris couldn't decide if that made it better or worse.
The soldiers regrouped fast. They split their forces and pushed through the cactus maze in single file, shields raised against needles, pushing the larger plants aside to open gaps for the men behind. Chris had asked why the mages didn't keep burning — why no wind magic to fan the flames. The answer was cold and practical: they needed to make a show of force. Capture the dungeon core if possible. And if they burned everything, there'd be nothing left to claim.
Patience. That was the word Korr had used. Let them in.
Chris let them in.
The cacti twisted the moment enough soldiers passed the outer threshold. Spikes hammered into shields and armor — most splintered, but some found joints, found gaps beneath helms, found faces. The thorned vines followed, tangling legs, tripping bodies, worming under plate and mail with the patient efficiency of something that had been waiting for exactly this moment. Through the Rootmind each soldier that went down sent a brief flare of eager satisfaction — not Chris's emotion, but the plants', sharp and bright and completely inappropriate for what was happening. Each death was the greatest thing they'd ever done.
He hated that. The joy and the dying existing in the same space, inseparable.
The thorn vine mats were worse.
Soldiers who'd seen what happened to their comrades still misstepped. The vines caught their ankles and pulled, or slipped between armor plates with a speed that defied the eye. Men went down in tangles, hacking at the ground with swords, cursing. Others went still — vines wrapped around throats, tightening, and the struggle stopped.
A horse screamed somewhere to the east. High and raw, cutting through the chaos. The thorn vines had it by the legs, dragging it down into a mass of writhing green. Chris tried to shut it out, but the Rootmind didn't work that way — the animal's thrashing came through as clearly as his own heartbeat, each vine snap and wrap and pull rendered in full sensory detail until the horse went still.
Shivers ran down his spine. He bit down on it and kept directing the network.
Spike bushes added their own misery. Soldiers tried to skirt the dense patches, moving around the men already bogged down in vines, but in the dark and confusion of the burning cactus field nothing went to plan. A soldier tripped on a runner and fell face-first into a bush's central cluster — the barbs caught his skin and held. Another stumbled into a different patch and disappeared into it. The bushes triggered at the Rootmind's command, each contact sending a brief flare of satisfaction. Each one cost the Empire a body.
Small numbers. But the Empire was counting every single one.
The mages recovered fast. After one of their own went down in the vines, they called the soldiers back and began burning through systematically. The losses were manageable at first — more cacti igniting, each death a pinprick through the network, the plants still throwing burning chunks at the enemy in their final moments. Then the mages started working in teams of three and four, concentrating fire on single sections just past the outer ring.
Whole patches immolated before they could react. Thorn vine mats turned to ash. The pinpricks became a burn, then a constant low heat in the back of Chris's skull that made coherent thought a struggle.
"They've burnt a path through the eastern cactus line," Korr said. His voice came steady and quiet, red eyes tracking the battle through the smoke. "Approaching the outer wall. The mist is thickening — it won't stop them if they commit, but it'll cost them more than the cacti did." He paused. "Two hundred soldiers moving. The rest are prepping the siege towers. Order the mobile vines to intercept once they break through."
Chris nodded and sent the command. The mobile vines — thick, fast-growing runners he'd been training for exactly this — peeled away from their patrol routes and surged toward the breach.
They hit the breakthrough soldiers in a wave of green. Weapons tangled. Legs wrapped. Men who'd just escaped the thorn patches were dragged back into them. One vine caught a soldier by the sword arm and pulled until his shoulder popped out of its socket. The scream traveled through the ground more than the air.
Chris pushed the vine onward and tried not to think about the sound.
The acid balls started flying a few minutes later.
Denna and Holt had set up near the northern gate, passing prepped gourd-shells to anyone with an arm steady enough to throw. The shells shattered on impact, spraying enhanced acid in wide arcs. Soldiers doubled over, clawing at blistered skin. Men fell out of formation, and the confusion spread through the ranks like a crack through ice.
Korr directed the throws with a precision that bordered on insulting. He stood at the wall's edge, one arm raised, pointing at targets as they emerged from the smoke.
"Left cluster. Twenty yards. Hold for the reload. Now."
His voice carried over the chaos without effort. No shouting. No strain. Just the same calm, cutting tone he used for everything, whether he was discussing supply logistics or calling kills.
A bucket of water tipped over somewhere behind the line. Nobody stopped to clean it up.
Sera went over the wall the moment the first breach opened.
She dropped into the fog between the outer and inner rings without a sound. Through the Rootmind, humans registered as pressure and movement — nothing more distinct than that — so Chris lost her almost immediately. He tracked her by the way the ground compressed under her feet: faster, lighter than the soldiers around her, and by the gaps that opened in the enemy formation wherever she moved. Bodies hit the earth in her wake. The wet, efficient sound of a short sword being used by someone who knew exactly where to put it carried through the smoke.
Blood made the soil slick. The way it mixed with Barrens dust into something between mud and paste, coating every surface — that detail kept catching Chris off guard. His boots were already black with it from a single trip to check the eastern approach. The smell cut through the smoke whenever the wind shifted. Iron and salt and something underneath that didn't have a name.
Korr complained about demons not having sweat glands. Mid-battle. Between calling targets for the acid throwers and shouting at two new arrivals who'd frozen at their posts. His grey skin had developed a greasy sheen — some demonic equivalent of perspiration — and he took it as a personal insult.
"We're not built for this." His fist hit the wall. "We regulate heat through our skin. We don't leak."
A gap opened near the northern edge of the breach. Mage fire carved through a thorn vine mat and a cluster of spike bushes in quick succession, and the outer ring folded inward. Soldiers poured through, pushing toward the space between the rings and the inner Ent wall.
Sera was there before Chris could respond. The ground shuddered under the impact of her movement — impossibly fast — and then came the ragged stutter of combat. Blade meeting flesh. Bodies hitting earth. The breakthrough stalled. Stopped. Soldiers who'd pushed through started pulling back, dragging wounded with them.
The numbers kept coming.
That was the problem Chris couldn't solve. The outer ring killed, maimed, slowed — everything it had been designed to do — and the Empire kept feeding men into it. Front ranks took casualties, fell back, were replaced by fresh soldiers from the rear. The mages kept burning. The siege towers kept rolling. The whole machine ground ahead with the patience of something that had more resources than the thing it was trying to crush.
The northern outer ring buckled.
Not a sudden collapse — a slow grinding failure, bone breaking in slow motion. The cacti there had taken the worst of the mage fire. Their joy curdled into something frantic, a desperate thrumming through the network, and when they started dying in earnest the feeling shifted to something closer to grief. The Rootmind absorbed it and passed it to him, and for a moment his vision went white at the edges.
"Northern outer ring is going." His voice came out thin.
"Pull it back." Korr was beside him, still watching. "All of it. Pull them into the inner kill zones and let them think they've won something."
Chris hesitated. The ring still held in the east and west. Pulling back meant abandoning plants still fighting, still alive, still reaching for the soldiers they'd been grown to stop.
"Now, boy." Korr's voice had an edge that could cut glass. "Every second you spend protecting plants that are already dead is a second the Empire uses to get their mages in range of the Ent walls."
Chris did it.
The command went through the Rootmind like a signal fire — every plant in the outer ring received the same impulse at the same time. Withdraw. Contract. Pull back. The cacti went still. The thorn vines retracted. The spike bushes folded inward. The mobile vines peeled away from their interception points and slithered toward the Ent wall, leaving the ground between the rings suddenly, shockingly empty.
The Imperial advance paused. The march stopped. In its place, the uncertain shuffle of soldiers who'd been expecting resistance and found nothing but open ground and silence.
Then they pushed forward again. Faster.
Chris sent the inner defenses the only order that mattered.
*Make them pay for every step.*