Steam-Powered Clockwork Dragon

Family: Clockwork

Huge construct (clockwork), unaligned

Armor Class 19 (natural armor)
Hit Points 200 (16d12+96)
Speed 70 ft., fly 100 ft., swim 70 ft.

STR	DEX	CON	INT	WIS	CHA
24 (+7)	23 (+6)	26 (+8)	1 (–5)	20 (+5)	1 (–5)

Damage Resistances fire; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities poison, psychic
Damage Vulnerabilities lightning
Condition Immunities charmed, exhaustion, frightened, paralyzed, petrified, poisoned
Senses darkvision 60 ft., passive Perception 15
Languages understands the languages of its creator but cannot speak
Challenge 18 (20,000 XP)

SPECIAL TRAITS

• Legendary Resistance (3/Day). If the clockwork steam-powered dragon fails a saving throw, it can choose to succeed instead.
• Self-Destruction. When a clockwork steam-powered dragon’s hit points are reduced to 20 or less, but are still above 0, it self-destructs the next turn, destroying itself in an explosion of metal scraps and steam that forces creatures within 20 feet to make a DC 20 Dexterity saving throw. This explosion deals 33 (6d10) slashing damage and 33 (6d10) fire damage on a failed save, or half as much on a successful one.
• Winding. A clockwork steam-powered dragon can function for one month every time it is wound. A creature of at least Large size can use an action to wind the clockwork steam-powered dragon, restoring it to one month of operating time; a creature of Medium size can wind it at half this speed, and Small or smaller creatures are generally unable to wind it.

ACTIONS

• Multiattack. The clockwork steam-powered dragon makes one bite and two claw attacks.
• Bite. Melee Weapon Attack: +13 to hit, 10 ft. reach, one target. Hit: 26 (3d12 + 7) piercing damage.
• Claw. Melee Weapon Attack: +13 to hit, 5 ft. reach, one target. Hit: 18 (2d10 + 7) slashing damage.
• Tail. Melee Weapon Attack: +13 to hit, 15 ft. reach, one target. Hit: 20 (2d12 + 7) bludgeoning damage.
• Steam Breath (Recharge 5-6). The clockwork steam-powered dragon exhales fire in a 60-foot cone. Each creature in that area must make a DC 20 Dexterity saving throw, taking 66 (12d10) fire damage on a failed save, or half as much damage on a successful save.

LEGENDARY ACTIONS

The clockwork steam-powered dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The clockwork steam-powered dragon regains spent legendary actions at the start of its turn.

• Detect. The clockwork steam-powered dragon makes a Wisdom (Perception) check.
• Tail. The clockwork steam-powered dragon makes a tail attack.
• Wing Attack. The clockwork steam-powered dragon beats its wings. Each creature within 10 feet of it must succeed on a DC 20 Strength saving throw or take 14 (2d6 + 7) bludgeoning damage and be knocked prone. The clockwork steam-powered dragon can then fly up to half its flying speed.