The wind died at once.

  The echo of the rumble lingered in the Frostline air—low, subterranean, like the mountain letting out a slow, ancient breath. Dust slipped from the high ridge above, glittering as it drifted down over Eis’s cloak.

  Beneath her boots, the ley road’s faint glow flickered… then steadied.

  Weaker now.

  As if something deep under it had begun to wake.

  Ronan raised a hand, halting the caravan with a sharp gesture.

  Weapons were drawn in practiced silence.

  The Archmage guide fumbled with his crystal compass. The device spun violently, emitting fractured, discordant tones. He paled.

  “It’s reacting,” he murmured. “This interference isn’t natural.”

  Kael dismounted first, dropping to a knee. His gloved fingers pressed to the icy ground. The snow around his hand shivered—a faint, near-imperceptible tremor.

  “The resonance is coming from below,” Kael said, eyes narrowing.

  Lira moved closer, tugging her cloak tighter around her mage’s robes.

  “Below? Not ahead of us?”

  “No,” Kael replied. “This is directly under the ley road.”

  Ronan turned to Eis.

  “Thoughts?”

  Eis studied the distortion in the air—the subtle pressure building beneath the soil. It was unmistakable now.

  A pulse.

  A pull.

  The same signature she had felt in the whisper last night.

  A fragment of the Vault’s power… reaching out.

  “It’s a residual pulse,” Eis said quietly. “A conduit bleeding from the Vault. Not active, but—”

  Her voice flattened.

  “—aware.”

  The Archmage guide nearly dropped his compass.

  “A-aware?”

  Eis nodded once.

  “It’s listening.”

  The earth split before anyone could speak.

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  A razor-thin crack tore across the icy ground, glowing with fierce blue light—slicing through snow and stone with a ringing, crystalline shriek.

  The caravan jolted.

  One ley-tuned mount reared and bolted, reins snapping.

  “Back! Move back!” Ronan barked, hauling a rider out of the widening fissure.

  The crack yawned open—an arm’s width, then broader—and with a roar of displaced mana, something climbed up from the depths below.

  A construct of stone and frozen ley energy.

  Humanoid only in outline, jagged and shifting, its body carved from obsidian veined with living blue light.

  Its “face” was a hollow mask of runes, constantly rearranging.

  Kael’s voice cut sharply:

  “Ley sentinel. It’s ancient!”

  The Archmage guide stumbled backward.

  “Those—those were sealed centuries ago—!”

  The sentinel moved.

  Impossible speed.

  An arm the size of a tree trunk swept across the pass, smashing stone where a mage had stood seconds before.

  Ronan’s blades came free with a metallic whisper.

  “Formation! Kael—right flank! Lira—left! Eis—on me!”

  The two began moving.

  Eis tore a card from her deck and snapped it between her fingers.

  The rune flared white—

  A pillar of molten mana erupted beneath the sentinel, cracking its lower torso.

  The construct staggered but found its balance quickly. It slammed a fist into the ridge, sending a shockwave rippling outward.

  The archmage stumbled—Kael grabbed him just before he toppled into the fissure.

  Lira raised both hands, chanting sharp, clipped syllables. A burst of arcane force slammed into the sentinel’s upper body, staggering it again.

  Her magic cracked a cluster of runes across its chest.

  Ronan lunged in, blades flashing silver-blue. He carved through the exposed ley channels, sparks of blue mana scattering like shattered stars.

  But the sentinel didn’t fall.

  It adapted.

  The runes across its torso shifted—reconfiguring. Drawing deeper from the ley road beneath them.

  Its next movement was smooth… eerily fluid.

  It was learning.

  The Archmage raised trembling hands and cast a quick support spell—

  A shimmering barrier flared around Kael and Lira.

  “I–I can only assist!” he shouted. “Combat magic isn’t my specialty!”

  “That’s enough,” Ronan called back.

  Eis slid across the ice as the sentinel’s next blow crashed down where she had stood moments earlier.

  She could obliterate it—her spellcards were more than enough.

  But the backlash would shatter the ley line beneath them.

  Collapse the entire pass.

  She needed precision.

  Smart. Clean. Controlled.

  Her hand brushed her pouch.

  She drew a card—a new creation, one built for situations exactly like this.

  Eis exhaled once, steadying her pulse.

  Then she moved.