Clockwork Dragon, Steam-Powered

Steam-Powered Clockwork Dragon CR 18

XP 153,600
N Huge construct (clockwork)
Init +10; Senses darkvision 60 ft., low-light vision, see invisibility; Perception +8


AC 36, touch 16, flat-footed 28 (+6 Dex, +2 dodge, +20 natural, –2 size)
hp 217 (25d10+80)
Fort +8, Ref +16, Will +8
Defensive Abilities fortification 75%; DR 15/adamantine; Immune construct traits; Resist fire 30; SR 27
Weaknesses vulnerable to electricity


Speed 70 ft., fly 110 ft. (average), swim 70 ft.
Melee bite +37 (4d6+14 plus 1d6 fire), 2 claws +37 (2d8+14 plus 1d6 fire), tail slap +32 (2d6+7 plus 1d6 fire), 2 wings +32 (2d6+7 plus 1d6 fire)
Space 15 ft.; Reach 15 ft.
Special Attacks adamantine weapons, breath weapon (100-ft. line, 14d6 fire damage, Reflex DC 22 half, usable every 1d4 rounds), self-destruction, storm blast
Spell-Like Abilities (CL 25th; concentration +20)

  • Constant—see invisibility


Str 38, Dex 23, Con —, Int —, Wis 11, Cha 1
Base Atk +25; CMB +41; CMD 59 (63 vs. trip)
Feats Improved InitiativeB, Lightning ReflexesB, RunB
Skills Fly +10, Perception +8, Swim +22; Racial Modifiers +8 Fly, +8 Perception
SQ heat management, increased locomotion, steam engine, swift reactions


Adamantine Weapons (Ex)

The teeth and claws of a clockwork dragon are made of adamantine and have the qualities of a weapon made from that material.

Efficient Winding (Ex)

Built for long and dangerous missions, a clockwork dragon can function for 3 days per Hit Die each time it’s wound.

Self-Destruction (Ex)

When a clockwork dragon’s hit points are reduced to 10% of its total (17 in the case of most clockwork dragons) or less but are still above 0, the creature self-destructs on its next turn, bursting into an explosion of metal scraps and steam that deals 10d6 points of slashing damage plus 10d6 points of fire damage to all creatures within a 20-foot-radius burst. A successful DC 22 Reflex save halves the damage. The save is Charisma-based.


Environment any
Organization solitary
Treasure none

Puffs of steam, quiet hissing, and a whirring of gears accompany this massive metal dragon.

Though some scholars may argue about who exactly created the first steam-powered clockwork, the secret of their manufacture is now out. Savvy engineers have started to create faster and more powerful clockwork contraptions in the form of marvels blending arcane heat sources with large boilers to create pressured steam that powers the complex constructs.

Section 15: Copyright Notice

Mechanical Monsters © 2023, Legendary Games; Authors: Jason Nelson, Tom Phillips, Mike D. Welham, Matt Goodall, Alex Riggs, Matt Daley.

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