Infernal Siege Engine
The engine deals double damage to objects and structures.
Hellfire Engine 5e reference with CR 16, type, stat block details, token resources, terrain tools, fear hooks, and monster hunt generation.
A massive infernal war machine of spiked iron and blazing furnaces, the hellfire engine crushes everything in its path while belching soul-searing flames.
Quick 5e Answer
Hellfire Engine is a CR 16 construct for D&D 5e. This page includes AC 20, HP 345 (30d12 + 150), a ready stat block, a downloadable PDF, and connected encounter tools.
Original 5e-Compatible Stat Block
Huge, Construct (Infernal War Machine), Lawful Evil
This is an original Monster Almanac 5e-compatible stat block, not an official SRD stat block.
The engine deals double damage to objects and structures.
A creature that starts its turn within 10 feet takes 10 (3d6) Fire damage unless it has total cover from the engine.
The engine makes two Iron Ram attacks and one Hellfire Cannon attack.
Melee Attack Roll: +13, reach 10 ft. Hit: 31 (4d10 + 8) Bludgeoning damage.
Ranged Spell Attack: +10, range 150 ft. Hit: 45 (10d8) Fire damage.
Dexterity Saving Throw: creatures in a 60-foot Line. Failure: 90 (20d8) Fire and Bludgeoning damage, split evenly, and the target falls Prone. Success: Half damage.
Base + optional customizer
Base + optional customizer
Base + optional customizer
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Hellfire Engine 5e reference: CR 16 construct, AC 20, HP 345 (30d12 + 150), PDF sheet, token, portrait, terrain, fear hooks, and hunt tools for Extraplanar,β¦ This page is part of the complete Monster Almanac stat block library. It includes a original 5e-compatible stat block with a downloadable PDF sheet, plus connected prep tools. Use this Monster Almanac page to move from search result to table prep: read the quick 5e reference, open the stat block, download the PDF when available, generate a token or portrait prompt, build matching terrain, create a monster-bound fear hook, and turn Hellfire Engine into a focused hunt.
Hellfire Engine can be used in Extraplanar, Urban, Ruins when you want a CR 16 construct that helps shape combat pressure, exploration tension, or narrative danger.
Hellfire Engine works well as a supporting threat, recurring danger, or encounter-building piece inside a larger scene.
The attached original 5e-compatible stat block gives you a table-ready rules reference, and the PDF button keeps the sheet easy to print or save before the session.
This makes Hellfire Engine useful not only as a monster reference, but also as a scene-shaping piece for travel danger, dungeon pressure, wilderness discovery, or a stronger narrative threat.
Hellfire Engine is listed in Monster Almanac as a CR 16 construct.
Hellfire Engine is listed as a construct.
Yes. This page includes a original 5e-compatible stat block and a downloadable PDF sheet.
Yes. This page links to Hellfire Engine token, portrait, chatbot, terrain, fear hook, and monster hunt tools for fast D&D prep.
After choosing Hellfire Engine, the next step is usually to connect the monster with a place, an encounter shape, a supporting cast, or a character who fears it. Use the tools below to keep building without leaving the Monster Almanac workflow.