Advanced Search

The Call of Atropus
Quick Preview
Full‑size Preview

The Call of Atropus


This adventure requires Mordenkainen's Tome of Foes

Celahir, a hulking Uthgardt barbarian, found himself far from home, but an odd comfort came in the heat of battle. “What in the Nine Hells are these things?” Phin, the gnomish trickster, shouted. “Don’t much care, gnome. They die well enough.” The barbarian’s bearded axe made a wet sucking sound as he pulled it from the slug-like alien. Their companion, the wizard Reeves, sat along the observatory’s wall, oblivious of the waning battle. “It’s impossible. We saw her die. She can’t be here, no.”

Phin’s eyes darted about the room they had retreated into. “Where... Celahir! Where are Scales and the damned priest? Garl save us, this operation is going belly-up. Why are we even here? What’s wrong with Reeves? What ARE these things?”

As the barbarian, covered in his own blood and the black ichor that ran through the aberrations they battled, was about to answer, an apparition and thick black smoke pulled itself through the stone wall. Unearthly whispers babbling about “Ao’s folly” and “the First Sphere” filled the dark, forgotten laboratory. The heroes prepared themselves, looking into the face of madness.

A maddening adventure for characters levels 5-7

As an ominous comet passes over Toril, a young researcher from Candlekeep goes missing. In darker corners of the Realms, eldritch horrors stir, answering the call of a dead god. Will the heroes be able to save the scholar before they succumb to an Elder Evil from beyond the reaches of sanity?

What's Inside:

  • A horrifying single session adventure utilizing creatures from Mordenkainen's Tome of Foes.
  • An original NPC with full stat block.
  • Detailed combat tactics, roleplaying tips, and Dungeon Master notes for novice and experienced DMs alike.
  • Four professionally drawn maps from 0one Games' Mario Barbati.
  • High quality map images for easy use on virtual tabletops.
  • Choose from either a Full version with beautiful art and layout or a Printer Friendly version for easy table use.

More from Christopher Walz:

The Midnight Revelry Rising Sands Cover An Ogre and His Cake

 The Slumbering Shadow The Wandslinger's Guide for Eberron The Dragon's Heirs

Anthologies and Community Collaborations

Dungeon Tales #1 Storm King's Barrows Encounters in the Savage Wilderness Mordenkainen's Lost Notebook Khyber Khronicle #02

About the Author: My first memory of Dungeons & Dragons is picking up my brother's 2nd edition Monstrous Manual and looking at the pictures before I could read. I have been playing roleplaying games for nearly 15 years and am eager to share my adventures with you.

My DMing style seeks to provide real (often deadly) challenges for players. I feel this makes an adventure truly rewarding and leaves your players feeling like heroes. If we, as DMs, can achieve that then we have "won" Dungeons & Dragons. This adventure is hard. Your players will be challenged. At the end of the day, they will remember what horrors lurk in the beyond.

Connect with me on Twitter @DMChristopherW!

Product Updates:

  • v2: Small formatting and text updates.
 More from this Title's Contributors
 Customers Who Bought this Title also Purchased
Reviews (6)
Discussions (7)
Customer avatar
Bryan C September 18, 2021 4:55 pm UTC
I noticed you mentioned providing VTT Ready Maps a couple of years back. Are there still plans for these? The zip file still only contains the numbered black and white maps.
Customer avatar
Steven B September 09, 2020 1:35 am UTC
Does this module involve the Elder Evil, Atropus?
Customer avatar
Christopher W September 09, 2020 1:40 am UTC
It does. Atropus is a an overarching theme in the one-shot. As it is meant for characters levels 5 to 7, you do not go toe-to-toe with Atropus.
Customer avatar
Jacob P April 26, 2019 2:01 am UTC
Really great module. Clear text, good maps, great atmosphere. Players and i ran it last night. We all had a lot of fun.

One small quest, why does the Valathurial have those 1/day at will spells? I just assumed that it was part of MToF. One of the players question Valathurial having too many spells. I just said that it is in MToF, and that NPCs aren't bound by player rules. But i went to check it this morning and couldn't find it.
Customer avatar
Christopher W April 26, 2019 12:28 pm UTC
Hey Jacob! Thank you so much for your support and kind words. I am happy to hear your table had fun with this.

Regarding the NPC, she is meant to be a warlock and those "Innate Spellcasting" spells represent eldritch invocations and mystic arcana from that class. If you have Volo's Guide to Monsters, check out the various warlock NPCs in that book - they are presented similarly.
Customer avatar
Brian R January 17, 2019 12:41 am UTC
I'm getting ready to run this over the weekend and I noticed a couple small errors: in room 5, it says the hole in the ceiling leads to room 11 (which is on the opposite side; it should be room 10) and in room 6, it says the hole leads to room 12 (which has no hole; it should be room 11). I'm excited to see how my players handle this dungeon!
Customer avatar
Matthew T November 15, 2018 10:17 am UTC
...See more
Customer avatar
Thomas S October 25, 2018 6:42 pm UTC
Planning to run this next Tuesday! Any suggested party size? I was going to go with 5 or 6 at level 7 (mandatory multi-classing for a fun challenge). Are their suggestions within for adjusting to larger party sizes or should I just use standard CR calculators like Kobold Fight club to maintain the difficulty?
Customer avatar
Christopher W October 25, 2018 6:50 pm UTC
Hey Thomas! Thanks so much for taking an interest in my work - it means a lot!

The adventure was written for 4-5 level 6 characters and has scaling options for levels 5 and 7. If you went with 6 level 7s, I would suggestion a 25-50% hit point for all enemy creatures. Obviously, you know your players best. If they are a party full of social butterflies who have not overly invested in combat, it should still be challenging to run as-is.

Be sure to refer to the Tactics sections of each combat encounter for suggestions on how to make a challenging, memorable encounter.

If you have any other questions, let me know!
Customer avatar
Lisa W October 03, 2018 6:15 am UTC
How many hours to run this adventure on average?
Customer avatar
Christopher W October 03, 2018 11:18 am UTC
Hello, Lisa! Thanks for taking an interest in my adventure.

There are a few secret rooms and ways to skip past entire sections of the map if the PCs are clever. Through my playtesting, the average time to complete was 4.5 hours.

If you have any other questions, please don't hesitate to ask.
Browse Categories
 Follow Your Favorites!
NotificationsSign in to get custom notifications of new products!
 Recent History

Product Information
Gold seller
Community Content
Rules Edition(s)
Original electronic
Scanned image
These products were created by scanning an original printed edition. Most older books are in scanned image format because original digital layout files never existed or were no longer available from the publisher.

For PDF download editions, each page has been run through Optical Character Recognition (OCR) software to attempt to decipher the printed text. The result of this OCR process is placed invisibly behind the picture of each scanned page, to allow for text searching. However, any text in a given book set on a graphical background or in handwritten fonts would most likely not be picked up by the OCR software, and is therefore not searchable. Also, a few larger books may be resampled to fit into the system, and may not have this searchable text background.

For printed books, we have performed high-resolution scans of an original hardcopy of the book. We essentially digitally re-master the book. Unfortunately, the resulting quality of these books is not as high. It's the problem of making a copy of a copy. The text is fine for reading, but illustration work starts to run dark, pixellating and/or losing shades of grey. Moiré patterns may develop in photos. We mark clearly which print titles come from scanned image books so that you can make an informed purchase decision about the quality of what you will receive.
Original electronic format
These ebooks were created from the original electronic layout files, and therefore are fully text searchable. Also, their file size tends to be smaller than scanned image books. Most newer books are in the original electronic format. Both download and print editions of such books should be high quality.
File Last Updated:
June 26, 2018
This title was added to our catalog on June 15, 2018.