The Rust Monster

Gabriel rolled up the drawing and tucked it back into his tunic. "Alright, let's move. Stay quiet. Inch, you take point."

"On it, boss," Inch said, her earlier queasiness replaced by focused energy. She slipped into the shadows, her green outfit blending surprisingly well with the gray and rust tones of the armory. She moved silently, her boots making no sound on the dusty stone.

Aika followed a few paces behind, hand resting on the hilt of her katana. Her eyes scanned the towering piles of discarded armor and weapons, her expression one of serene alertness. Lumen walked beside Gabriel, her staff tapping softly with each step, her violet eyes glowing faintly in the dim light.

They only moved about twenty meters from their landing point when a low, grinding sound echoed through the hall. It was a sound like metal being slowly twisted and torn.

Everyone froze. Inch held up a closed fist, the signal to stop.

The sound came again, closer. It was accompanied by a skittering, scraping noise, like many metal legs moving over stone.

From behind a massive pile of shattered shields, a creature emerged.

It was the size of a large bear, but its body was a grotesque fusion of rusted metal plates, exposed gears, and organic, chitinous flesh. Its head was a mass of antennae that twitched and quivered, each one ending in a rust-colored, feathery tip. Its mouth was a circular maw lined with rotating, rasp-like teeth of pure rust. Six multi-jointed legs, each tipped with sharp metal claws, carried its bulk with surprising speed. Its back was a forest of jagged, rusted spikes and broken weapon hilts that had been absorbed into its form.

"A rust monster," Gabriel whispered, his voice tight. "But… bigger. Much bigger."

The creature's antennae waved in the air, zeroing in on the party. It let out a chittering hiss, and a cloud of fine, reddish-brown dust puffed from its maw. Where the dust settled on a nearby iron helmet, the metal instantly corroded, flaking away into nothing.

"Oh, you have GOT to be kidding me," Inch groaned, drawing her twin knives. The blades gleamed in the dim light. "My knives are steel! That thing eats steel for breakfast!"

"It consumes metal," Aika stated, her voice calm but her grip on her katana tightening. "My blade is folded steel a thousand times. It will be like a delicacy to this beast."

Lumen stepped forward, her staff raised. "I have no metal. The Dark Form's power is pure. Stand back, children."

The rust monster charged. It was faster than its size suggested, a blur of rust and chitin. It headed straight for Aika, its antennae reaching for the gleaming metal of her katana.

Aika didn't flinch. As the creature lunged, she performed a fluid sidestep, her kimono swirling around her. "Blossom Dance!" In one blindingly fast motion, she drew her katana and delivered a series of slashes across the creature's flank. The steel bit deep, slicing through rusted plating and into the fleshy core beneath.

But the effect was not what she expected. Instead of black blood, a spray of rust particles and acidic ichor erupted from the wounds. The ichor splattered across her katana's blade. Instantly, a sizzling sound filled the air. Where the ichor touched, the pristine steel began to pit and corrode at an alarming rate.

Aika's eyes widened in horror. She leapt back, staring at her weapon. A quarter of the blade was already pitted and weakened.

The rust monster shrieked in what might be pain or fury, but also seemed invigorated. It turned, its maw opening wide, and a stream of concentrated rust-dust sprayed toward Aika.

"Nullify Light!" Lumen's voice boomed through the hall. A sphere of pure, velvety darkness erupted around Aika, swallowing the rust-dust stream. The particles hit the darkness and simply vanished, neutralized.

Inside the sphere, Aika is safe, but she can't see. "Lumen! I am blinded!"

"Trust in the dark, child!" Lumen called back, her face strained with effort. Maintaining the sphere was draining.

The rust monster, frustrated, turned its attention to the next shiniest thing: Gabriel's shield and shortsword. It scuttled toward him, antennae quivering with anticipation.

Gabriel stood his ground, raising his shield. "Inch! Now!"

Inch, who had been circling around the back of the creature during the commotion, saw her opening. The monster's back was turned, its attention fully on Gabriel. She sprinted forward, knives held low.

"Quiet Stab!" she whispered, and drove both blades into the joint where one of the creature's rear legs met its body.

The monster let out a deafening metallic screech. It whipped around, one leg buckling. Inch yanked her knives free and rolled away just as a massive, spiked tail swept through the space she'd occupied.

The knives in her hands were now dull and pitted, the metal half-eaten away by the creature's acidic blood.

"Damn it! My good knives!" Inch wailed, tossing the useless weapons aside.

Gabriel seized the distraction. He didn't attack with his sword—he knows it's useless. Instead, he reached into his pocket and pulled out his lucky dice. They are simple bone dice, worn smooth from use. He focused, feeling the familiar thrum of improbable fortune course through him.

"Lucky Roll," he muttered, and tossed the dice onto the floor in front of the charging monster.

The dice clattered across the stone. They didn't land on numbers. Instead, as they bounced, they seemed to warp reality around them. A loose, heavy stone block from the damaged ceiling above, dislodged centuries ago and precariously balanced, chose this exact moment to fall.

It didn't fall on the monster.

It fell directly in front of it.

The rust monster, moving at full speed, didn't have time to stop. It tripped over the newly appeared obstacle, its own momentum sending it crashing headfirst into a towering pile of ancient, brittle spears. The pile collapsed on top of it with a tremendous crash of splintering wood and bending metal.

The creature was buried, thrashing and hissing beneath the debris.

Lumen dropped the darkness sphere around Aika, who blinked in the returning light. Her katana was badly damaged, but she held it ready.

"Now! While it's down!" Gabriel shouted. "Aika, your blade is compromised. Use the environment! Lumen, can you hurt it?"

Lumen nodded, raising her staff high. "Divine Darkness!" A beam of concentrated black energy lanced from her staff, striking the writhing mass of rust and spears. Where it hit, there was no corrosion, but a cold, nullifying energy that seemed to sap the very vitality from the creature. It shrieked again, this time in genuine agony.

Aika, seeing her damaged sword, didn't hesitate. She sheathed the katana—a painful gesture for a samurai—and instead grabbed a long, heavy oak spear shaft from the debris, one that still had a rusted but solid iron head. It was a crude weapon, but it had no polished metal for the monster to feast on.

As the rust monster struggled to free itself, Aika drove the spear down with all her strength, aiming for a gap in its rusted plating. The iron tip punched through chitin and into the soft tissue beneath.

The creature gave one final, convulsive shudder and then went still. The rust on its body seemed to lose its luster, fading to a dull, dead gray.

Silence returned to the armory, broken only by the party's heavy breathing.

Inch stared at the remains of her knives. "Well, that sucked."

Aika looked mournfully at her pitted katana. "A master's work… ruined."

Gabriel walked over and picked up his dice, pocketing them. "We're alive. That's what matters. But we need to be smarter. No more metal against metal-eaters. Lumen, you're our best weapon against things like that."

Lumen gave a weary smile. "The Dark Form provides, in its way."