The cut talon of the apex mire-goliath sat in the center of the survey room table like a monument to military futility.
Around it lay the shattered leftovers of twelve royal steel broadheads, their hardened points blunted, curled, or split into flying splinters of ruined metal.
Beside the arrows lay a two-inch iron giant crossbow bolt head, fired at point-blank range from a fifty-pound twisting force heavy steel crossbow.
The forged iron chisel tip was crushed flat, distorted into an ugly mushroom of mushroomed melted rock waste that had failed to bite even five tiny fractions of an inch into the rainbow-bright black hard shell.
Giles Croft stood over the table with his wooden ruler and a pair of silvered dial fine measuring tongs.
He measured the mushroomed giant crossbow tip, noting the warping on a sheet of squared drafting parchment.
“Complete dynamic plastic warping upon impact,” Giles said, his voice flat and analytical.
“The projectile material had a lower yield strength than the target back shell. When the bolt struck the curved plate at two hundred and forty feet per second, the striking force was faded away entirely in mushrooming the soft iron head rather than punching through the substrate.”
Captain Kenneth Drake picked up one of the shattered arrowheads. That turned the split steel in his fingers with a grim scowl.
“That’s forty-pound dwarven spring-steel,” Kenneth said. “Forged by Borin’s apprentices and cooled in whale oil.
It can punch through a knight’s plate harness at eighty paces. And against this beast, it shattered like dry pine bark.”
“Because a knight’s plate harness is only a tiny fraction of an inch of soft forged iron,” Giles explained. He tapped the blackboard with his pencil.
“This back shell is eighty tiny fractions of an inch of multi-layered, stone-hardened hard shell heavy with cross-linked protein fibers. It has high fracture toughness and a curved shape designed to induce projectile bending.”
Duncan Stone-Splitter leaned against the timber doorframe, his stone-dressing scutch resting against his knee.
“Then we need bigger catapults,” Duncan suggested. “Cast a five-hundred-pound granite boulder and drop it on the beast from sixty feet up. Even dragon bone can’t take twenty tons of falling rock.”
“Catapults have atrocious angular accuracy, terrible rate of fire, and need thirty men to haul the winches,” Giles replied. He shook his head. “And their muzzle speed is less than eighty feet per second.
Speed is squared, while mass is merely linear. One half of mass times speed squared. To double your striking force, you must double your projectile mass. To quadruple your striking force, you simply double your speed.”
Toby Karr was scribbling formulas in his notebook, his eyes bright with concentration. “So a small bullet moving very fast has more destructive energy than a heavy rock falling slowly?”
“Much more,” Giles confirmed. “And more importantly, it concentrates that energy onto a tiny impact area.
Sectional thickness is the determining factor in penetration mechanics. A blunt two-inch giant crossbow bolt spreads its energy across three square inches of armor. A tiny needle concentrates the same energy onto a fraction of a square inch, generating instant nearby shear pressures exceeding nine gigapascals.”
Master Borin Bronze-Lung stepped into the room, carrying a heavy, oilskin-wrapped bundle under his arm.
He set the bundle onto the oak table with a solid, metal thud that rattled the inkwells.
He unwrapped the oiled cloth.
Inside lay three slender, six-sided metal bars of dense, dark slate-gray metal, each twelve inches long and barely an inch and a half thick.
The metal had no shine. It was matte, heavy as lead, and cold as river ice.
“Wolframite,” Borin whispered in a hushed, sacred tone. “Dug from the deepest heat veins beneath the old family halls of Karak-Thurn.
The high clan calls it star-iron. It’s heavier than pure gold, harder than hardened tool-steel, and fire can’t melt it. The hottest blast in our forge can’t even soften its corners.”
Giles picked up one of the metal bars.
His hand dipped slightly under the unexpected mass. The slender twelve-inch bar weighed nearly sixteen pounds—an astonishing thickness of over nineteen grams per cubic half-inch.
“Heavy dark metal,” Giles murmured, running his thumb over the clean crystal-clear grain. “Pure sintered heavy dark metal-hardened carbon-iron alloy. Extreme crushing yield strength, high elastic modulus, and zero mushrooming under hyper-speed impact.”
He looked at Borin, his glasses catching the lantern light.
“How much of this stock does your clan possess?”
“Eighty pounds in the portal depot,” Borin answered. “And Thorgan says the deep shafts at Mount Thurn can produce two tons before spring thaw.
But no dwarf has ever forged a weapon from it, Lord Giles! You can’t hammer it on an anvil—it shatters like glass under cold shock! You can’t cast it in sand—it laughs at the crucible!”
“You don’t forge heavy dark metal on an anvil,” Giles said calmly.
“You machine it with diamond-paste gritty wheels, or sinter the powdered metal under extreme crushing pressure and hydrogen reduction. We have diamond dust from Thorgan’s lapidary kits. The Under-Pass provides all the pressure we need.”
He stepped to his drafting board, pinning down a fresh sheet of heavy thick parchment with brass tacks.
With his T-square and drafting compass, Giles began to lay out the blueprint for a revolutionary high-speed projectile.
“A sub-caliber armor-piercing discarding sabot,” Giles announced, his pencil flying across the paper.
In the center of the drawing was a long, slender dart. A six-sided rod of heavy dark metal alloy, fifteen tiny fractions of an inch in width and sixteen inches long. It ended in a needle-sharp chisel tip with four tiny stabilizing fins at the base.
Surrounding the needle was a light, three-part carrier shoe—the sabot—turned from seasoned white ash and banded in soft copper.
“The wooden sabot fills the launch guide and captures the expanding clockwork thrust,” Giles explained. He pointed to the drawing.
“Because the sabot is made of lightweight wood, the total projectile mass is reduced by sixty percent. That allows the throwing arms to speed up the dart to extreme Mach speed down the rails.”
Giles leaned across the drafting table, tapping the thick parchment with the brass tip of his wooden ruler.
“And then there’s the cosmological factor,” Giles said. His voice dropped into a tone of quiet, devastating care. “The bio-arcane mana shield.”
Captain Kenneth Drake and Master Borin exchanged a glance of deep, solemn dread.
“The shield of the Broodmother,” Kenneth said, his knuckles tightening on the table edge.
“Three hundred years of royal military lore say that an apex hydra’s mana-shield can’t be pierced by physical projectiles. The magic absorbs striking force, spreading the shock across the entire ball-shaped lattice until the missile bounces off like a pebble on ice.”
“It doesn’t bounce off because of magic,” Giles corrected. “It bounces off because traditional projectiles operate within the shield’s reactive replenishment latency window.”
Toby Karr looked up from his notes. “Latency window, Lord Giles?”
“A magical mana barrier is an active energetic membrane,” Giles explained, sketching a sine wave on the edge of the thick parchment. “When an arrow strikes the outer surface, the impact deforms the ringing mana-lattice.
The entity’s central neural nodes detect that warping, channel fresh aether from next-door reserve nodes, and equalize water’s skin to scatter the impact force. That body channeling process needs about two hundred and fifty split seconds—one quarter of a second.”
Kenneth frowned, working the numbers in his head. “A quarter of a second? That seems blindingly fast.”
“To a mortal swordsman swinging an axe, it’s instant,” Giles said.
“To a sub-caliber heavy metal dart traveling at nine hundred and fifty meters per second, a quarter of a second is an eternity. At Mach two point eight, the heavy dark metal needle traverses the three-inch thickness of the mana shield in exactly thirty-one point six split-seconds.”
Borin’s copper-braided beard stopped trembling. His mouth slowly fell open.
“Thirty-one... Split-seconds?” Borin whispered.
“Zero point zero three one seconds,” Giles said with exact peace. “To the mana-shield, the impact doesn’t even exist.
The needle penetrates the barrier, punches through the vital organs, and exits the rear spine before the central neural nodes can propagate a single defensive wave. The shield will remain standing, fully intact and glowing with emerald light. Meanwhile, the titan inside falls down dead.”
Kenneth Drake bent over the blueprint, squinting at the three-part wooden shoe.
“And when it leaves the muzzle?” Kenneth asked.
“Wind-cutting drag acts upon the flared petals of the wooden sabot,” Giles said.
“The moment the assembly clears the rail guide into open air, air pushback forces the three wooden shoes to peel open like an orange rind. The sabot petals drop harmlessly into the ditch forty yards out.”
He tapped the center of the drawing with his pencil point.
“Free of its wooden carrier, the naked heavy dark metal needle flies alone. Minimal frontal cross-section. Zero sky drag. Screaming across the fen at Mach two point eight—nearly three thousand feet per second.”
Kenneth Drake stood frozen, his eyes tracing the clean, lethal shape of the needle dart.
“Mach two point eight,” Kenneth whispered, tasting the strange words on his tongue. “How fast is that in horse-gallop?”
“It crosses a mile of open marsh in less than two seconds,” Giles replied evenly. “Before the monster’s neural reflexes can register the sound of the release.”
Master Borin clutched his copper-braided beard, his chest heaving with awe.
“A needle of star-iron... Flying on the wind of the sky... Shedding its wooden skin like a snake.”
Borin looked up at Giles, his eyes wide with holy dwarven terror.
“And what will throw this needle, Lord Giles? No hand-bow or siege heavy steel crossbow in the realm could launch a dart at such speeds without splintering into kindling.”
A brilliant golden banner flashed in the center of Giles’s vision, with the dry clockwork click of a system screen unlocking a new stone-built tier.
Lady Millicent Croft walked down the hall from the exchequer office, her double-entry thick parchment ledger tucked firmly under her arm.
“Eighty pounds of high-grade heavy dark metal billets,” Millicent said, stopping at the table. “At current dwarven market valuations, that is forty gold sovereigns of rare stone stock.
Plus forty carats of heavy-duty diamond bort to charge the grinding laps. Can this settlement afford to shoot forty gold sovereigns into the swamp, Giles?”
“If a forty-ton apex titan breaches our concrete dyke,” Giles replied without looking up from his compass, “it will cause three thousand sovereigns of load-bearing damage to the blast fire, dismantle two miles of strap-iron railway, and eat fifty laborers as heat sustenance.
Spending forty sovereigns on heavy dark metal sabots to protect two hundred thousand sovereigns of civil public works is an elementary risk-mitigation hedge.”
Millicent closed her ledger with a soft, satisfied nod. “An acceptable risk-mitigation hedge. Provided Borin recovers the heavy dark metal darts from the carcasses after the battle.”
Borin let out a booming laugh. “Don’t you worry, Lady Millicent! I’ll dig through forty yards of dragon meat with a spoon to fetch back my star-iron!”
Giles adjusted his glasses. His pencil tracing the was heavy layered steel throwing arms on the new system display.
“The prototype we tested on the stronghold proved the principle,” Giles said, closing his notebook.
“Now we build the production model. A heavy runic twisting force rail-lance, mounted on a three-hundred-and-sixty-degree rotating turntable flatcar that runs directly on our new strap-iron railway.”
He looked at Kenneth, Duncan, and Borin.
“Toby, sharpen the lathe chisels. Borin, heat the diamond grinding wheels. We have fifty heavy dark metal needles to turn before Hesketh’s horde breaches the outer ditch.”