Siege Engine Construct

Huge construct, unaligned

Armor Class 20 (natural armor)
Hit Points 297 (22d12 + 154)
Speed 30 ft.

24 (+7) 10 (+0) 24 (+7) 6 (-2) 10 (+0) 1 (-5)

Saving Throws Str +12, Con +12
Damage Immunities poison, psychic; bludgeoning, piercing, and slashing from nonmagical attacks
Condition Immunities charmed, exhaustion, frightened, paralyzed, petrified, poisoned
Senses darkvision 120 ft., passive Perception 10
Languages understands the languages of its creator but can’t speak
Challenge 15 (13,000 XP)


  • Multiattack. The siege engine construct makes three pound attacks.
  • Pound. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 34 (4d12 + 7) bludgeoning damage.
  • Burning Pitch (Recharge 5-6). The siege engine construct launches a burning ball of pitch at a point it can see within 150 feet. Each creature in a 20-foot radius centered on that point must make a DC 18 Dexterity saving throw, taking 45 (10d8) fire damage on a failed save, or half as much damage on a successful one.


The magical siege engine construct can take 3 legendary actions, choosing from the options below. It can only use one legendary action at a time and only at the end of another creature’s turn. The construct regains spent legendary actions at the start of its turn.

  • Pound. The magical siege engine construct makes one pound attack.
  • Burning Pitch (Costs 2 Actions). The magical siege engine construct uses its Burning Pitch ability.
  • Siege Resilience (Costs 3 Actions). The magical siege engine construct gains resistance to all damage until the end of its next turn.


The siege engine construct is a monumental construct born from the ingenuity and sorcery of master artificers. It stands as an imposing marvel of mechanical warfare. Crafted to resemble a formidable war machine, these colossal constructs are often commissioned for battlefields where their immense strength and destructive power are required.

Found predominantly in regions ravaged by conflict or within the armories of powerful warlords, the siege engine constructs are expertly designed to lay waste to fortifications and breach impregnable walls.

Towering over the battlefield, these mechanical monstrosities exhibit an awe-inspiring presence, their hulking frames constructed from reinforced steel and reinforced with enchanted plating.

At a height of several stories and weighing several tons, siege engine constructs possess an array of devastating weaponry mounted upon their sturdy frames. Mighty battering rams and trebuchets capable of hurling massive projectiles are among the arsenal of destruction built into their massive frames work without the assistance of living operators.

Section 15: Copyright Notice

Constructs & Clockworks (5E) © 2023, Darrin Drader Designs; Author Darrin Drader

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