The chasm leading out of the Lightless Sink did not open into air; it plunged into the Drowned Maw.
Here, at six thousand paces beneath the continental crust, the boundary between tectonic stone and open sea dissolved entirely. Two colossal drakes flew side by side through an immense, submerged cavern half a league across: Cinder, his scales gleaming with the fierce, white-hot heat of his newly awakened lineage, and the elder Abyssal Drake, whose ancient bulk displaced the humid, sulfurous vapor like a living black mountain.
Around their mounts, Lyra held a dual-layered Weave-Aura.
The celestial starlight formed an aerodynamic sheath around the two great beasts, deflecting the falling showers of boiling brine that condensed along the basalt roof.
Gideon sat locked behind Lyra on Cinder’s high saddle-brace, his heavy claymores resting across his knees, his chin resting against the crook of her neck. His arms formed an unyielding iron cradle around her ribs, his chest rising and falling in sync with her own, his furnace heat feeding the perimeter of the light-shield without a whisper of strain.
"The air is changing," Gideon murmured, his deep bass rumbling against her spine. "The sulfur is burning off. It smells like crushed nightshade and burnt bone-meal."
"The Black Coven," Lyra said, her voice tight, her hazel-grey eye sharp while her violet eye traced the thick, pulsating veins of dark energy running through the rock walls. "High Sister Karen was only the butcher at the trench gate. The rest of the inner circle didn't die at Blackwood Stronghold. They retreated here."
Ahead, the subterranean chasm opened into the Drowned Siphon.
It was an immense, circular amphitheater carved out of a massive column of white sea-limestone, surrounded by four cascading waterfalls of steaming, sulfurous brine that plunged into a bottomless whirlpool in the center of the floor.
Suspended directly above the whirlpool, held aloft by twelve massive cables of braided silver wire, was a colossal inverted pyramid forged from black volcanic glass.
Around the perimeter of the limestone tier knelt forty hooded sorceresses of the Black Coven.
Unlike the novices of the upper shoals, these women wore robes of woven nightshade-silk that pooled around their knees like spilled ink. Their heads were thrown back, their arms raised toward the inverted pyramid, their voices weaving a high, discordant chant that resonated through the acoustic cavities of the limestone.
Standing atop the central dais before the whirlpool was the architect of their retreat: Grand Matron Vespera.
The blood-sister of the slain Morgana.
Vespera stood tall, her silver hair woven with needle-thin bones of drowned infants, her face unlined and youthful—a terrible, unnatural beauty bought with centuries of harvested northern marrow. In her hands, she held the Sovereign Loom of the Deep: a curved frame of star-iron strung with veins of living, pulsating silver.
Through those silver strings, she was drawing the dying vitality of the southern shelf directly into the inverted pyramid, distilling it into a single, concentrated drop of abyssal essence to feed the awakening Mother below.
As the two colossal drakes crested the limestone rim, the chanting did not falter.
Vespera turned, her black-glass eyes reflecting the incandescent starlight of the approaching riders with cold, amused contempt.
"You are persistent, little niece," Vespera’s voice drifted across the cavern—sweet, melodic, and poisonous as hemlock. "You dragged the brute from his mountains. You unknotted our northern seals. You even broke the seven anchors of the shelf. But you are too late to stop the weaving."
She struck the silver strings of the Loom with a curved bone plectrum.
A discordant chord ripped through the air, sending a visible shockwave of pale, freezing sonic vibration across the amphitheater.
The Weave-Aura around Cinder flickered, hissing violently as the acoustic frequency struck the starlight barrier.
"She's anchoring the siphon to the continental plate," Lyra warned through the link, her teeth clenching as the feedback jarred her jaw. "If she finishes that chord, the weight of the sea collapses the limestone vault. We'll be buried under fifty miles of bedrock."
"She won't finish the song," Gideon growled.
The warlord sheared the leather harness with a flick of his dagger, rising to his feet on the drake's neck-crest while Cinder was still fifty paces out and twenty paces high.
"Hold the drakes clear of the whirlpool, Lyra!" Gideon roared. "I'll take the Loom!"
Gideon leaped.
He didn't glide; he fell like a two-hundred-and-sixty-pound meteor of muscle and star-iron straight toward the central dais.
Vespera’s eyes narrowed. "Sisters! Bind the beast!"
The forty sorceresses lowered their hands in unison. From their sleeves shot forty whips of braided silver wire, crackling with liquid nightshade lightning, converging on Gideon in mid-air to shred his flesh from his bones.
Lyra didn't let them touch him.
From Cinder’s saddle, her star-iron circlet exploded with blinding celestial brilliance.
She thrust both hands forward, seizing the forty lines of silver wire with her Weave-sense. With a savage, sovereign twist of her fingers, she crossed the lines, knotting them into an acoustic feedback loop that rebounded straight into the sorceresses' palms.
The silver wires detonated.
Forty pairs of hands were sheared away in a synchronized shower of white sparks and screams of agony as the coven’s magic backfired through their veins, throwing the sorceresses off the limestone ledge into the steaming waterfalls below.
Gideon hit the dais like a thunderbolt.
His boots shattered the marble floorplates before Vespera, the kinetic shockwave throwing the Grand Matron three paces back against the rim of the whirlpool.
Vespera recovered with fluid, terrifying speed. She discarded the bone plectrum, her right hand transforming into a claw of pale, calcified sea-glass tipped with black venom as she lunged straight for Gideon’s throat.
"You are just cattle for the slaughter, Drake!" she hissed.
Gideon didn't bother drawing his sword.
He stepped inside her guard, caught her glass-clawed wrist in his left hand, and squeezed.
The sound of shattering glass echoed through the vault as he crushed her fingers into powder. Vespera shrieked, but before the scream could clear her throat, Gideon’s right fist drove into the center of her chest, caving in her sternum and pinning her hard against the star-iron frame of the Sovereign Loom.
She choked on black blood, her youthful face withering in seconds as her connection to the harvested life-force was severed.
"The... the Mother..." Vespera wheezed, her dying eyes wide with terror as she looked past him into the steaming depths of the whirlpool. "She... is... already... awake..."
"Then she can bury you," Gideon growled.
With a brutal shove, he threw the broken body of the Grand Matron into the roaring vortex below.
He turned toward the Sovereign Loom.
The silver strings were humming wildly, vibrating at a catastrophic frequency that threatened to detonate the inverted pyramid above.
Lyra landed beside him, leaping from Cinder’s wing as the two drakes circled the limestone ceiling.
She stepped to the Loom, her hands hovering above the vibrating silver strings.
She looked at Gideon, her dual-colored gaze blazing with triumphant, sovereign fury. He stepped behind her, his large, scarred hands settling over hers, their fingers interlacing as their conjoined true-mate fire flared through the metal frame.
"Unravel it," Gideon whispered into her hair.
Together, they tore the strings from the star-iron frame.
The inverted pyramid of black glass shattered into a million harmless, drifting sparks of violet light, falling like snow into the dark waters below.
The siphon was broken.
The stolen life-force of the southern shelf flooded back into the earth, stabilizing the limestone vaults and restoring the natural warmth to the continental bed.
At the edge of the whirlpool, the water stopped churning.
From the lightless abyss at the bottom of the vortex, a slow, colossal breath rose—not of steam, but of ancient, primordial sea-water that smelled of the first ocean that had ever existed.
The Mother was waiting in the silence.
And the King and Queen of the North stood ready to descend into her court.