Petrifying Gaze. If a creature starts its turn within 30 feet of the basilisk and the two of them can see each other, the basilisk can force the creature to make a DC 16 Constitution saving throw. On a failed save, the creature is restrained as arcane crystals begin to form around it.
The restrained creature must repeat the saving throw at the end of its next turn, becoming petrified on a failure or ending the effect on a success.
A creature that isn't surprised can avert its eyes to avoid the saving throw at the start of its turn.
Arcane Core. When the basilisk is reduced to half its hit points or fewer, it gains advantage on melee attack rolls, and its weapon attacks deal an extra 1d8 force damage.
Multiattack. the Clockwork Basillisk makes 3 attacks, one with his bite and two with his claws.
Bite. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 21 (3d10 + 6) piercing damage plus 7 (2d6) force damage.
Claw. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 15 (2d8 + 6) slashing damage.
Arcane Pulse (Recharge 5–6). The basilisk releases a burst of arcane energy in a 20-foot radius. Each creature in that area must make a DC 16 Dexterity saving throw, taking 36 (8d8) force damage on a failed save, or half as much damage on a successful one. Creatures that fail the saving throw are knocked prone.
Crystal Overdrive (1/Day). The basilisk overcharges its arcane core. Until the end of its next turn, creatures have disadvantage on saving throws against the basilisk's Petrifying Gaze, and the basilisk's weapon attacks deal an extra 1d10 (1d10) force damage.
Description
The Clockwork Basilisk is a towering construct of blackened iron, its massive body forged from interlocking plates of ancient, weathered metal. Each movement is accompanied by the grinding of hidden gears and the hiss of arcane energy coursing through its frame. Its form mimics that of a predatory reptile, low to the ground yet overwhelmingly powerful, built for relentless pursuit and devastation.
Jagged crystalline spines erupt from its back, glowing with an intense blue arcane light. These crystals pulse in rhythm with the creature’s exposed core, embedded deep within its chest and visible through gaps in its armor. Veins of radiant energy snake across its body, illuminating the seams between metal plates like cracks in a dying star.
Its head is a brutal fusion of engineering and menace—a reinforced skull lined with serrated metal teeth, capable of crushing stone and steel alike. Its eyes burn with a cold, unfeeling blue light, devoid of instinct or mercy. When it fixes its gaze upon a target, that energy intensifies, triggering a horrifying transformation as living flesh begins to crystallize into rigid, arcane structures.
Unlike natural creatures, the Clockwork Basilisk does not hunt for sustenance. It was created with purpose—an engine of siege and control, designed to eliminate threats with mechanical precision. It does not tire, does not hesitate, and does not fear. Once it identifies a target, it will pursue until its directives are fulfilled or its arcane core is destroyed.
Where it walks, the ground trembles under its immense weight, and the air hums with unstable magical energy. Shattered remnants of crystalized victims often litter its path, silent warnings of the construct’s deadly gaze and unstoppable nature.
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