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Discover the mysteries of a forsaken marshland prowling with eldritch monstrosities.

7 Spells
20 Monsters
15 Items
3 Character Options
3 Adventures
115 Pages
The Ichorous Peninsula
Venture into the Ichorous Peninsula, a cursed marshland prowling with vicious aberrations, kept isolated by the Blackstone, the greatest wall ever built. Walk alongside its stoic sentinels, sole protectors of the mortal realms against the onslaught of madness. Make costly deals with eldritch hags, and foil the great conspiracy that threatens to expand the invasion of the ruinous powers unto the entire material plane!
Key Features
- Automated Active Effects designed for high-level monsters.
- Fully playtested high-level monsters that can be dropped into any setting.
- Integrated adventures easily accessible for any campaign setting.
- Quickly access any rule or entry in the expansion through an intuitive table of contents.
- Enriched text links for fast reference to rules, spells, features, and more.
- Compiled art library.
All content from the book is neatly organized within the built-in compendium explorer. Monsters, features, spells, consumables, and roll tables are fully searchable, making it easy to find exactly what you need at any time.
Automation at Its Finest
Focus on what truly matters, running unforgettable sessions, while the module handles the rules behind the scenes. Now with support for Midi-Qol and DAE! From monster effects and conditional modifiers to health tracking and special mechanics, built-in automation eliminates tedious manual tracking and keeps gameplay fast, fluid, and immersive. Even the most complex encounters run effortlessly.
- Fully statblock integration.
- Attacks and effects apply cleanly and consistently, reducing errors and rules lookups mid-session.
- Built-in health tracking keeps combat clean and accurate, even for creatures with multiple bodies or layered effects.
Monster Mayhem
Unleash true chaos at your table with 19 meticulously crafted monsters drawn from the three distinct regions of the infernal penumbra of Sheol. Each creature is designed not just to challenge players, but to drop effortlessly into any campaign setting, whether you’re running dark fantasy, planar horror, or something entirely your own.
Every monster comes fully realized and fully automated, from attacks and special abilities to immunities, spells, and reactive traits. Helping you to dramatically reduce prep time.
Beyond the creatures themselves, you gain access to an arsenal of 148 modular, customizable monster features. Mix and match abilities, enhance existing stat blocks, or build entirely new horrors from the ground up. Whether you need a quick twist to surprise veteran players or a bespoke boss to anchor a major story arc, these tools give you total creative control.
Easily Accessible Content
Navigate rules and reference material with ease using a clear and intuitive table of contents. All content is seamlessly integrated with the built-in Journal system, making it simple to browse, search, and reference rules during play without breaking the flow of your game.
All content from the book is fully integrated, ensuring complete access to every region, creature, and piece of lore within the Infernal Penumbra of Sheol.
- Enriched text links rules, monsters, and features directly from the table of contents for fast, in-session reference.
- Art handouts offer high-quality human made visuals ready to share with your players at a moment’s notice.