Cairn: 1st Edition — Masterwork VTT Compendium Pack
A downloadable tool
The Cairn: 1st Edition — Masterwork VTT Compendium Pack brings Yochai Gal’s classic dark-forest adventure ruleset directly into Foundry VTT with zero manual data entry.
Zero Generative Drift. 100% Deterministic Verification.
Mark of the Odd systems rely on strict procedural rules: no to-hit attack rolls, pure damage-versus-armor calculation, critical damage saving throws, and a rigid 10-slot inventory matrix (with fatigue occupying physical space). The Masterwork Engine™ deterministically parses, validates, and packages every rule, item, beast, and spellbook into native Foundry VTT schemas with zero generative hallucinations.
📦 What’s in the Box:
• Turnkey Foundry VTT Module: Pre-built module.json manifest with indexed item, spellbook, and monster compendium packs.
• Forest Armory & Gear: Weapons, armor ratings (1–3), torches, hireling kits, and survival supplies calibrated to native slot values.
• Full Grimoire (100 Spellbooks): Complete 100-spell table converted to modular, fatigue-inducing spell items.
• Woodlands Bestiary: Forest horrors, wood goblins, and dungeon beasts extracted with native STR/DEX/WIL pools and exact Hit Protection.
• Cryptographic Audit Seal: Includes a root SHA-256 verification seal certifying 100% fidelity against the official Creative Commons source text.
⚖️ Licensing & Attribution
Distributed under the terms of the Creative Commons Attribution-ShareAlike 4.0 International License (CC-BY-SA 4.0).
Based on Cairn by Yochai Gal.
| Updated | 4 days ago |
| Published | 11 days ago |
| Status | Released |
| Category | Tool |
| Author | gm-copilot-studios |
| Tags | cairn, compendium, foundry-vtt, indie-rpg, into-the-odd, mark-of-the-odd, OSR, Tabletop role-playing game |
| Content | No generative AI was used |
Download
Click download now to get access to the following files:

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