In the Halls of the Undermountain King - A Megadungeon Crawl!
Beneath Waterdeep lies a labyrinth filled with monsters, treasure, and secrets. Those who descend seek glory and wealth... but few return. Will you?
$23.00
/ Session
Details
Bi-weekly / Thursday - 4:00 PM UTC
Session Duration / 3–4 hours
1 / 6 Seats Filled
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Meet your party members
1/6
About the adventure
"Undermountain? Ah, yes. A great place to have fun, the most famous battlefield in which to earn a reputation as a veteran adventurer — and the largest known mass grave in Faerûn today.” — Elminster Near to the heart of Waterdeep rests a famous inn and tavern called the Yawning Portal, built around and named after the gaping pit in its common room. At the bottom of this crumbling shaft is a labyrinthine dungeon of twisting tunnels and monster-filled chambers shunned by all but the most daring adventurers. Known as Undermountain, it is the domain of the legendary wizard Halaster Blackcloak whose power is only rivaled by his own insanity. From the bustling streets of Waterdeep, your party of adventurers will brave increasingly perilous levels, facing cunning traps, bizarre creatures, and mind-bending puzzles. Will you survive the Mad Mage's twisted games and uncover the treasures hidden within his labyrinth, or become another forgotten soul trapped forever in Undermountain's depths? Prepare for a dungeon crawl of epic proportions, where only the cunning and the strong will prevail!
Game themes
Meet the Game Master
5.0
(40)
2 years on StartPlaying
368 games hosted
Highly rated for: Creativity, Knows the Rules, Inclusive
Average response time: 4 hours
Response rate: 100%
About me
Hi there! I’m Cody, also known as Pax, a professional Game Master based in San Antonio, Texas. I’ve been playing and running tabletop RPGs for over twenty years, starting back in 2nd edition, spending plenty of time in 3.5, and now primarily running 5th edition. I first got into 5e through Adventurers League, running weekly public games for five years straight with tables of seven or more players. That experience taught me a ton about managing large groups, keeping sessions engaging, and helping both new and veteran players feel like part of the story. Over the past couple of years, I’ve transitioned into running private campaigns full-time, completing six full campaigns and building a wonderful, supportive community along the way. I have a deep love for taking established modules and tweaking them to create smoother gameplay, give characters more meaningful connections to the story, and expand on the content to make the narrative feel dynamic and impactful. If you’re looking for a reliable GM with a strong understanding of the rules, experience handling large groups, and a passion for teaching new players, you’re in the right place.
View Profile →Character creation
Creating your character
We will primarily be using the 2024 rules, but legacy content will be available if it hasn't been updated. Characters will begin at level 5 and will be made during session 0. If you'd like to make your character before the session, you're more than welcome to. You may roll for stats using rules listed in the discord server, or use either point buy or the standard array. All official books are allowed with third party or partnered content approved on a case-by-case basis. The only outright disallowed supplement is the Book of Ebon Tides. Characters using the 2014 ruleset receive a bonus feat at level 1 as part of their background, unless the background awards a feat or additional spells already. In addition to your starting gear, you begin play with a potion of healing. If you have any questions or need help, I'll be available through discord prior to the session.
What to expect
Preparing for the session
Players will need to have a Discord account, a D&D Beyond account, and a working microphone. If you'd like to use a webcam you're more than welcome to, but it is not required.
What Pax brings to the table
I bring a well stocked D&D Beyond library, custom maps, dynamic encounters, and thematic handouts to bring the world to life. I’m no professional voice actor, but I give every NPC distinct voices, quirks, and motivations. From grizzled captains to wide-eyed street urchins, you’ll always know who’s speaking.
Homebrew rules
Healing potions can be drunk or administered to another creature as a Magic action. Doing so restores the maximum amount of HP that potion can restore. (2024 specific) Rolling a Natural 1 on a d20 test restores a character’s Heroic Inspiration. If you already have Inspiration you may give it to a party member who doesn't, otherwise it is lost. Rolling a Natural 20 on initiative gives you advantage on either your first attack roll or ability check. Magical items can be attuned instantly. Breaking an attunement still requires a short rest.
Equipment needed to play
Internet
Computer
Microphone
Headphones
Platforms used
Safety
How Pax creates a safe table
Every campaign begins with a session zero. In it we cover setting expectations and tone, house rules and mechanical clarifications, party dynamics and character concepts, and a review of safety tools and boundaries. This also happens when a new player joins an ongoing campaign. During session 0, I’ll share a digital Lines & Veils form where players can privately note their boundaries. “Lines” (hard limits) and “Veils” (fade to black topics) will be respected without question, and players can update their preferences at any time. I include scheduled breaks to give everyone a moment to rest, stretch, or grab a snack, usually about 2 hours into a session. At the end of each session, we’ll do a quick Stars & Wishes round. Stars highlight moments you loved or appreciated. Wishes give you a chance to shape future sessions, express desires for character development, or flag lingering concerns. This helps me fine-tune the experience and makes sure everyone feels engaged and valued.
Content warnings
Safety tools used