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Ulraunt's Guide to the Planes: Acheron
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Ulraunt's Guide to the Planes: Acheron

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As part of our Monsters of the Guildverse sale, this digital title has been marked down by up to 30%. For more monstrous savings, visit our Monsters of the Guildverse Sale page.

Ulraunt's Guide to the Planes: Acheron

Quill & Cauldron presents to you a very special 300+ page tome, aimed at both players and dungeon masters.

It is narrated by none other than Ulraunt, the Keeper of Tomes at Candlekeep, and also supports epic level play (as introduced in Epic Characters).

Below is a short description of what you will find within each part of the book.


  • A narrative told from the perspective of Ulraunt, designed to inspire and create story hooks, as he descends through Acheron's four layers with his band of misfits.
  • Details on Acheron and each of its four layers, including environmentsfauna, and flora, how to get there, what hazards to avoid, and much more.
  • A detailed look at each cube face of many of the cubes that exist on the various layers, such as Nishrek, home of the orc pantheon, and Clangor, home of the goblinoid pantheon.
  • Tables to help you quickly create your own cubes.


  • We explore a total of 16 deities, including Bane, Laduguer, Deep Duerra, Urdlen, and the entire goblinoid and orc pantheons.
  • Each deity includes nifty tips for roleplaying them, mighty stat blocks, awe-inspiring lairs, and templates for creating versatile avatars.


  • One new playable race and one new subrace.
  • Eighteen new and unique subclasses, such as the exploration-focused surveyor artificer, the sinister blood hunter of the order of the warmonger, or the malleable druid of the circle of warshaping.  
  • Over 50 new spells of all levels, each inspired by the prevalent themes of Acheron such as atrophy, cold, magnetism, metals, psionics, and storm.


  • 138 new stat blocks, some based on existing lore, others seen here for the first time.
  • Four war mounts.
  • Three new war machines.
  • Seven unique characters from the Forgotten Realms, such as the fabled Obould Many-Arrows.

  • Print
    • The book is available in both hardcover and paperback.
    • The paperback is available in both standard and premium colors.
    • The hardcover is only available in premium colors for a truly premium experience.
  • PDF
    • The PDF is available as single pages and as spreads.
    • Both versions are hyperlinked throughout the table of contents and the appendices.
    • The page number is clickable on every page, allowing you to instantly return to the table of contents.
  • With the recent global pandemic affecting several lives and taxing medical resources, it is important that we each do our part.
  • We wish to help an organization that has worked against the spread of misinformation and consistently provided care around the globe.
  • For that reason, a portion of every sale will go to Doctors Without Borders.


  • Click one of the preview images below to enlarge it.

ToC1 ToC2 Avalas Clangor Thuldanin The Gray Cube Shargaas Nomog-Geaya Character Options Artificer Bard Long Blade Monk Spells Duergar Arduke Gorebrute Mercane Rot-Guard Gyrocopter 1 Gyrocopter 2 Obould Appendix

Other Works
Epic Characters Shadowfell Acheron Heroes' Handbook
  • Ulraunt is already exploring another plane and working on bringing it to life.
  • We need your help to ensure that he portrays the local fauna and inhabitants accurately.
  • If you're interested, there are several ways you can help us out. We appreciate all the help we can get.
  • Playtesting
    • If you are interested in becoming a playtester, please send us an email via mmp.playtests AT gmail DOT com
    • If you are selected and provide us with useful playtest feedback, you get a free copy of our next title.
  • Surveys
    • If you can spare a few minutes, we'd also love to hear your feedback on this title.
    • To provide feedback, download the file UlrauntNeedsYourHelp.pdf which shows how to do so.
  • Ratings and Reviews
    • Lastly, you can also help us by simply rating this title or giving it a review - it helps us out a lot

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Reviews (12)
Discussions (43)
Customer avatar
Dungeon M January 01, 2022 6:29 am UTC
I was looking through this from my DM for character options and I think I noticed an oversight. The Way of Ferrous Esotericism grants proficiency in light and medium armor, but it doesn't grant any sort of exception for the monk's unarmored features (martial arts and unarmored movement, and technically unarmored defense though I guess that defeats the point of the armor). I'm fairly sure this isn't intended because the Ferrous Blades feature mentions your unarmed strikes, which would be very weak if you aren't benefiting from Martial Arts.

Finding wording that works for the feature is tricky. I'd suggest something along these lines:
"You can wear light and medium armor while still retaining the benefits of your features as though you were unarmored."
Customer avatar
Sebastian L December 28, 2021 12:30 pm UTC
I have a question about Gilgeam and his realm Zigguraxus, from what I can find it should exist in 5e, at least according to the fandom wiki, but it's not included in this book, what is the reason for leaving him out?
Customer avatar
Riccardo B November 10, 2021 9:10 pm UTC
Hi will this book have other versions, like the Ulraunts guide to the Shadowfell?
Customer avatar
Edward W October 23, 2021 12:46 am UTC
Slightly off-topic, but I want to see the complete compilation of every volume in the Codex of Infinite Planes in a single, hardback book.

The PDF is 367 pages. That's a huge tome, but even if it were $100 I think people would buy it. I know I'd buy it the moment it released.
Customer avatar
Riccardo B September 24, 2021 4:46 pm UTC
Hello, Will any other book like the Ulraunts guides be published in the near future ora has anyone created Monsters using the CR system in those books that wants to share them?
Customer avatar
Riccardo B September 24, 2021 4:57 pm UTC
Maybe mostly CR 40-45 Monsters the Ones that are really powerful, thanks in advance of anyone replies.
Customer avatar
Terrelle S July 02, 2021 10:21 pm UTC
Are any other "Ulrant's Guides..." coming out or in the process? Looking forward to other planes
Customer avatar
Liz M June 02, 2021 6:28 pm UTC
Update : Sorry for not updating you guys here about my experience with Acheron! Three of my players were out for most of Q1, and I was able to get only so much data. Thankfully, sessions are starting to pick up now that my coffee shop is open, and I should have a full review of a Lvl 17-22 campaign in a week or two.
Customer avatar
Joshua S May 30, 2021 12:33 am UTC
Any updates? Do not mean to rush you, I understand the past year has not exactly been forgiving!
Customer avatar
Daniel T December 19, 2020 11:31 pm UTC
So im just after buying the book verson or this. Do you have a book verson of the shaowfell counterpart for sale? Will you be making more books in the series?
Customer avatar
Damian F December 20, 2020 12:26 am UTC
The Shadowfell book doesn't have a print version because DMsGuild is weird like that.

I know they were playtesting more content (I was participating!) but then 2020 got weird and I didn't get any further correspondance.
Customer avatar
Liz M December 21, 2020 4:28 am UTC
Ah, good to hear that some progress has been made.

I would play test myself, but I’m a bit full writing notes for the Grim Hollow Kickstarter.
Customer avatar
Liz M January 28, 2021 3:02 am UTC
Has any further progress been made on this new content? I’m just curious since we haven’t gotten much correspondence since October
Customer avatar
Damian F January 28, 2021 3:44 pm UTC
At least you got correspondence up to that point! I hadn't heard anything back since my last feedback email which was sent in late April. I had to cancel my playtest campaigns for lack of content. I revived it for Grim Hollow at least.
Customer avatar
Liz M January 29, 2021 12:45 pm UTC
I guess we will just have to wait and hope. For now, I’m just going to finish the feedback essay for the Fey transformation.
Customer avatar
Marc A February 08, 2021 1:03 pm UTC
Hi everybody,

Apologies for everything coming to a bit of a halt in the latter half of 2020.
Last year severely affected several team members and has been quite a struggle.
But yes, some progress has been made, though it has been quite slow.
We're currently trying to ramp back into gear.

We'll soon be needing some beta reading for a new title.
If any of you are interested in helping out, feel free to contact me via e-mail.
Customer avatar
Liz M February 10, 2021 2:53 am UTC
Thank you for the update! I unfortunately can’t playtest any more content at the moment (most of my group is on hold right now). But if there is any other way that I can help, I am more willing to do so.
Customer avatar
Marc A February 10, 2021 8:52 am UTC
Honestly, an update was long overdue!

As for beta reading, we're just looking for some feedback on some material.
Is the flavor good, is anything unclear, does it seem fun, that sort of thing.
We could use input from one or two more people.
We have a discord set up for this very purpose where we're looking at just a couple of things at a time.
Beta readers can look through it and comment at their leisure. There's also no expectation that everybody comments on everything.

Let me know if that sounds at all interesting to you :)
Customer avatar
Liz M February 11, 2021 11:10 pm UTC
Good to know! I’ll start re-reading Acheron tonight :). I don’t know about discord, but I’ll comment on any insights or suggestions down here.
Customer avatar
Njål M March 20, 2021 7:29 pm UTC
I had the privilege of playtesting Acheron and I'd love to help out with this product as well, I've already sent an email to the official channel but does this mean that there's been a change in the procedure due to the pandemic?

Edit: Also I don't have your Email address.
Customer avatar
Paul A November 10, 2020 1:51 am UTC
I'm curious to the Blood Hunter Warmonger Blood Curse of War. Does it only do something if you amplify it? And with Blood Hunter being updated does it use Intelligence instead of Wisdom for the DC?
Customer avatar
Marc A February 08, 2021 12:51 pm UTC
Hi Paul,

The blood curse affects others with what you already have. Use it to buff an ally or on an enemy caster who suffers the detriments but can't reap the benefits.
I've uploaded a separate .pdf with the updated Blood Hunter. The file is currently mistakenly named "(UGttP_Acheron_v1.0_spreads.pdf)" - and I can't seem to change it.
Customer avatar
Paul A October 19, 2020 2:44 am UTC
This book is awesome. I'm currently playing a Stormsmith in a pirate-themed campaign and playing an arcane trickster-going Daggerspell Wizard in another campaign. I'm very excited!! Conjuration Wizard is my favorite School, but Daggerspell could very match or surpass it!
Customer avatar
Marc A October 20, 2020 2:24 pm UTC
Hi Paul,

I'm so happy you like it!
While we do a lot of playtesting and take multiclassing into account, I can't recall if we had anyone try arcane trickster + daggerspell.
I'd absolutely love to hear your thoughts once you've played it through a few levels.
Customer avatar
Paul A December 02, 2020 3:06 am UTC
Will this be available on Fantasy Grounds? My gaming group switched to FG due to recent circumstances, and I want to keep my character a Daggerspell Wizard.
Customer avatar
Marc A February 08, 2021 12:17 pm UTC
Hopefully, yes, though I don't have a timeframe.
There's a limited number of people who do FG conversions and there's a ton of conversion going on these days (for obvious reasons).
Customer avatar
Callum R October 14, 2020 9:44 pm UTC
I was wondering what the reasoning behind the difference in spellcasting between the deities from the Shadowfell book and this book was, specifically how the ones from the former didn't require any components to cast spells while the ones listed here only eschew material components.
Customer avatar
Marc A October 20, 2020 2:20 pm UTC
Hi Callum,

Great question!
So, all of the deities presented in the Shadowfell guide are part of the Faerûnian pantheon.
Those deities (and perhaps some other deities who are very magical in nature) don't need any components for their spells.
The more specific pantheons, such as the orc pantheon, the goblinoid pantheon, etc. only eschew material components in comparison.

Now, there are never any rules without exception.
You might notice that Shargaas, for example, doesn't need verbal components whereas the other orc deities do. This is due to his stealthy nature.
The same can be said for Yurtrus, who, well, can't speak at all. Verbal components would render a spellcasting trait rather moot on him.

Though Bane is part of the Faerûnian pantheon, he still requires somatic components. Since he wields no weapons in the traditional sense and grapples with his left hand, we assume he'll always have his right hand free.
It allows room for a DM...See more
Customer avatar
Callum R November 05, 2020 12:04 pm UTC
Oh cool. I was asking because it means the difference between one of them being difficult to counterspell and one being near impossible to.
Customer avatar
Bojan H September 23, 2020 5:38 am UTC
won't let me buy the hardcover version every time I try to purchase it shows up as the watermarked pdf
Customer avatar
Marc A October 20, 2020 1:39 pm UTC
Hi Bojan,

That sounds strangely odd.
Have you tried using a different browser?
Customer avatar
Iulian-Ioan P September 04, 2020 9:03 am UTC
How's the updating and corrections of this product going?

I'm interested in getting a physical copy, but I abstained to get it when it came out because it was inevitable that there might be some mistakes (as it's normal in products of such a scale).
Customer avatar
Marc A October 20, 2020 1:38 pm UTC
Hi Lulian-Loan,

As you might imagine, things are moving a bit slower this year.
However, we're always working on new things and revisiting existing titles.
It's been six months since release now and while we've certainly found some mistakes (in no small part due to the loving community here), there haven't been nearly as many as one might have expected.
Customer avatar
Damian F August 29, 2020 10:39 am UTC
There are some issues with the statblock for Yrrga on page 280:

- Its "Indoctrinate" ability mentions targeting creatures it can sense with its "Sense Nihilism" trait, but it has no such trait.
- It simultaneously has immunity and vulnerability to Pyschic damage
- Its ability "Mind Shatter" incorrectly calls itself "Aura of Madness" when describing a creature becoming immune to its effects at the end
Customer avatar
Marc A October 20, 2020 1:35 pm UTC
Hi Damian,

Thank you for pointing these out. You might imagine, we tweaked Yrrga quite a bit. Evidently not well enough though.
We'll make sure to fix it asap.

In the meantime, you can remove her psychic vulnerability and add the following trait:

Sense Nihilism. Yrrga is aware of the presence of giants and humanoids within 100 miles of it that have lost all hope or don't worship a deity. It knows the distance and direction to each creature, as well as its name, its ability scores, its social standing, and why it lacks hope or doesn't worship a deity, but can’t sense anything else about it. A creature protected by a mind blank spell, a nondetection spell, or similar magic can’t be perceived in this manner.
Customer avatar
Damian F October 20, 2020 4:35 pm UTC
Thank you for the reply, Marc! Bit late now, Yrrga in my game has been defeated for a while. But I'll duly keep note of these suggestions should I ever need to repurpose her stat block for another creature - quite likely, given how my party are now plane-hopping and fighting gods, elder evils and hopefully soon primordials on the regular.
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File Last Updated:
February 08, 2021
This title was added to our catalog on March 18, 2020.