Codex Automatica: Dark Mechanical Monster Manual for 5e

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Codex Automatica Compendium

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Codex Automatica Compendium

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Where flesh fails, clockwork endures.

MECHANICAL NIGHTMARES FOR YOUR 5E CAMPAIGN

Deep beneath forgotten cities and remote mountain strongholds, the Ironveil Order works tirelessly toward a singular vision: mechanical perfection. Their workshops echo with grinding gears and desperate screams as they pursue transcendence through technological horror.

Codex Automatica delivers 30 meticulously crafted mechanical monstrosities spanning Challenge Ratings 1/4 to 20, each designed to seamlessly integrate into your fantasy campaigns while bringing a unique dark mechanical aesthetic to your world.

WHAT'S INSIDE:

  • 6 Automatons and Servants (CR 1/4-3): From tiny clockwork beetles that spy on your players to unsettling homunculi that mimic humanity
  • 14 War Machines (CR 3-9): Devastating constructs engineered for battlefield dominance, from stalking assassins to unstoppable siege weapons
  • 10 Ascended Forms (CR 10-20): The Order's masterworks, where mortal minds have transferred consciousness into immortal mechanical vessels, including infamous Mechano-Lich

FULLY REALIZED ADVERSARIES:

Each creation includes:

  • Complete 5E-compatible stat blocks
  • Concise, evocative lore that's easy to integrate into any campaign
  • Tactical notes revealing how each construct fights
  • Specific weaknesses that reward clever players
  • Clean, printer-friendly layout with gorgeous mechanical aesthetics

PERFECT FOR:

  • DMs seeking unique construct adversaries beyond standard golems
  • Campaigns featuring artificers, mad scientists, or ancient technological civilizations
  • One-shot dungeon crawls through abandoned workshops
  • Long-term villainous organizations with a mechanical theme
  • Players who love discovering and exploiting specific monster weaknesses


Product Details:

  • Format: Digital PDF (printable, high-resolution)
  • Pages: 38
  • Monsters: 30 detailed creatures
  • Language: English

 

Please note:
This is a digital download only. No physical item will be shipped.

After purchase, you will gain instant access to the PDF file.
Some of the artworks were created with usage of Photoshope AI tools. If you are strongly against any usage of AI, please consider it.
For non-commercial use only

The grinding gears of the Ironveil Order turn relentlessly. Will your players become their next "volunteers" for mechanical enhancement, or will they bring these clockwork horrors to a grinding halt?

Customer Reviews

Based on 4 reviews
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G
Garth Arnett
Wonderfully Made!

This is a good monster manual for you dark clockwork creature needs! Specially with a touch of perhaps magitech cultists! I really enjoy the creatures here in this one.

S
Silas
Epic Creator

The creator gave me this book, along with the Crimson Codex. They’re awesome 😊

A
Alexandr Sirikov

Good, solid collection of monsters... Beautiful illustrations, rich lore and very detailed descriptions.

A
Amanda H
I can't wait to use this in my DnD session...

I can't wait to use this in my DnD sessions! It's going to make it so fun to see what players do with this added into the campaign :)

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Explore a curated selection of digital books, token frames, and tools made to fit effortlessly into any 5e campaign. Whether you’re building lore, prepping sessions, or customizing encounters, everything here is designed to save you time and spark creativity—so you can focus on what matters: telling great stories at the table.