In the city of Waterdeep rests a tavern called the Yawning Portal, named after the gaping pit in its common room. At the bottom of this crumbling shaft is a labyrinthine dungeon shunned by all but the most daring adventurers. Known as Undermountain, this dungeon is the domain of the mad wizard Halaster Blackcloak. Long has the Mad Mage dwelt in these forlorn depths, seeding his lair with monsters, traps, and mysteries—to what end is a constant source of speculation and concern. This adventure picks up where Waterdeep: Dragon Heist leaves off, taking characters of 5th level or higher all the way to 20th level should they explore the entirety of Halaster’s home. Twenty-three levels of Undermountain are detailed herein, along with the subterranean refuge of Skullport. Treasures and secrets abound, but tread with care!

This material was originally published as two separate adventures, D1: "Descent into the Depths of the Earth" and D2: "Shrine of the Kuo-Toa." Contained herein are referee notes, background information, maps, and exploration keys intended for use with the Advanced Dungeons & Dragons rules. The adventure can be used alone or as part of an extended adventure that begins with G1-3: "Against the Giants" and continues with D3: "The Vault of the Drow" and Q1: "Queen of the Demonweb Pits." TSR 9059

When the man who would be the Muted God wordlessly stepped beyond the gates of the Starstone's Cathedral, his thousand and one faithful ringing the Ascendant Court watched with the silent contemplation that is their highest sacrament. When he failed to emerge, many of his penitents abandoned their vows but a small sect remained loyal and worshipful. You and your fellow Pathfinders are sent into the mountains north of Absalom to follow the path of a doomed party and uncover the secrets of the Muted God. His loyal band of followers, called the Hand, will stop at nothing to keep you away from their shrine—even forming an alliance with some of Golarion's most evil denizens.

With allies gained from denizens of the Underdark, the former drown enclave of Szith Morcane is on the precipice of being retaken. During the battle for Szith Morcane, secrets of the drow community are revealed. What will you do with this knowledge, and how will it affect the outcome of the conflict?

Agents of the fire giants of Maerimydra, a city in the Underdark, have overtaken the drow outpost of Szith Morcane. The factions seek out adventurers to free the outpost’s leaders for questioning on the giants’ activities. Can you extricate them before it’s too late?

When an ill-favored orb drops from the sky and devastates the countryside, only the PCs stand between an ambitious wizard, a cult of dragons, and a dark ambition that could bring an army of fiendish wyrms into your campaign world! "The screams became overpowered by the sound of the terrible falling star--a black orb of malign energy hurled from the firmament in the dead of night. In that instant, the village of Rhale was utterly destroyed, reduced to a hollow crater of flaming decay. Now, frightened talk of a dark presence descended from above has taken root, though none can put name to the faceless fear that might reside within this terrible orb." While traveling the countryside, the player characters witness an explosive event - the falling of a meteor into a distant hillside. Soon thereafter, they encounter several mercenaries menacing some refugees. From them, the PCs can learn, that a group of dragon worshippers called the Black Covenant are in the area and intend to use the fallen star for their own nefarious purposes. Upon arriving at the crater, the PCs find that the falling star is in fact a massive sphere of iron with an opening in its side. They enter the sphere to find a small complex of rooms protected by numerous traps and guardians. They also battle several members of the Black Covenant, until they make their way to the heart of the complex, where they discover the source of the Covenant's interest in the Black Egg, they try to use it to create a half-fiend red dragon. The PCs must succeed if they wish to prevent the creation of an army of fiendish dragons. Lot's of monstrous NPCs with class levels and templates for enemies (half-black dragon orc warriors level 7, for example) are used in this adventure. Pgs. 57-78

The waters of a sunless sea meet a pebble-strewn shore, beyond which opens a wide Underdark vista shimmering with pale cave-light. Titanic columns as big as castles march miles into the misted distance. The wide, steeply sloping base of the nearest colossal column is carved with streets, walls, and elaborate structures, many with gaping, empty windows. A few glimmer with faint illumination. Are you brave enough to explore the spire-city and face the terrors that lurk within? Part 2 of the Barrow of the Forgotten King series. Followed by Fortress of the Yuan-ti.

Just as the trail led from the STEADING OF THE HILL GIANT CHIEF to the frozen wastes where was found the GLACIAL RIFT OF THE FROST GIANT JARL, so the adventure in the latter place has let (or transported) the intrepid party to what they hope will be their last challenge. They are about to venture into the hot and smoking barrens which are in effect Muspelheim, the home of fire giants. This module contains background information, referee's notes, three level maps, and exploration matrix keys. It provides a complete module for play of ADVANCED DUNGEONS & DRAGONS, and it can be used alone or as the last of a three-part expedition adventure which also employs DUNGEON MODULE G1 (STEADING OF THE HILL GIANT CHIEF and DUNGEON MODULE G2 (GLACIAL RIFT OF THE FROST GIANT JARL). TSR 9018

To a reigar, art doesn't imitate life, it is life. "An Artist's Errand" is an AD&D Spelljammer adventure for 4-6 good-aligned characters of level 6-8 (about 35 levels total). The module assumes the party is familiar with spelljamming. The party should include at least one spell-caster, preferably a wizard, but a party of resourceful (and powerful) fighters and rogues should be able to complete the adventure. PCs with an understanding of navigation, elvish, and engineering will come in handy as well. The party need not own a spelljamming ship to complete this adventure. Pgs. 8-31

When a series of grisly murders and raids on farms and fishing boats come to light, accompanied by a strange fog, the people of Elmwood need heroes to investigate and stop the attacks. There is hardly anyone in the Moonsea who’s life hasn’t been touched by one of the tragedies over the past years, and these attacks may have deeper causes than anyone knows. Part of the Elmwood Adventures Series

The Adventurers arrive at a drow outpost in the Underdark. They must either dispose of the drow or ally with them against the invading legions of Orcus!

Written by the setting’s creator, incomparable RPG author Monte Cook, Ptolus: Queen of Lies is an action-packed fantasy adventure painstakingly re-designed for Ptolus: Monte Cook’s City by the Spire. Involving numerous challenging scenarios for characters of 11th level, Queen of Lies is filled with dozens of dark elf personalities, cunningly showcasing their alien culture—a world of merciless betrayal and sinister lusts. Deep below the surface, in the sunless lands of the Netherdeep, creatures of darkness build weapons and amass armies, dreaming of invasion. An attack on a peaceful elven shrine in Emerald Hill sends the heroes on a quest to retrieve stolen artifacts and kidnapped friends. All signs point to the actions of the dark elves of Ul-Drakkan, far below the city of Ptolus. However, even within that ancient fortress, there exists a deeper darkness.... Underground enemies lurk beyond every twisting passage, and strange creatures abound. The foul culture of the dark elves is both decadent and cruel, and the heroes may discover that they’ve stumbled into a web of deceit and treachery spun by the self-styled queen of the dark elves. Can the player characters complete their mission without being discovered, or will they find out, perhaps too late, that their actions been orchestrated all along by the wicked Queen of Lies? Published by Fiery Dragon Productions

A Dreams of the Red Wizards Epic The treachery and master plan of Thay are at last revealed—and heroes are needed for a final assault to prevent the return of one of Faerûn’s greatest evils! Part Five of the Storm King’s Descent series of adventures. A Four-Hour Epic for 11th- through 16th-Level Characters and 17th- through 20th-Level Characters. Optimized For: APL 13 and 18 This adventure also includes rules for single-table play. Content warnings include: cold weather hazards, possession, and slavery

Deep in the jungles of Xen'drik, a relic of great power has lain hidden for thousands of years. Now, determined adventurers race against time and the nefarious agents of the Order of the Emerald Claw to locate the relic, overcome unimagined obstacles, and unlock its ancient secret. The Order's hunt for the parts of an ancient creation pattern nears its conclusion, but other groups also seek this powerful item. Once all of the pieces come within close proximity of each other, the ancient intelligence awakens. Suddenly all parties have a new and powerful enemy to contend with...

*THIS IS A D&D NEXT/5E PLAYTEST ADVENTURE* Imani, a Turmishan wizard and former adventurer, seeks the aid of heroes to infiltrate Dretchroyaster’s lair and recover the Diamond Staff of Chomylla—the key to powerful magic and wisdom locked away for thousands of years. In addition to his own sagely interest in the lore of lost Uvaeren, Imani recognizes the dangers of such powerful magic falling into evil hands. The dracolich has secured the staff in his lair’s cen- tral chamber, using ancient wards of protection that can be bypassed only by four artifact-idols once belong- ing to a cult of Bhaal. Each group of adventurers enters the dungeon through a different section of the dun- geon—a forgotten temple of Bhaal, a vast underground lake, a troglodyte village, or Dretchroyaster’s vaults. Dretchroyaster’s lair is no simple set of caverns and ancient ruins. It sits atop a source of great power and energy, which the dracolich and his Cult of the Dragon allies hope to use to unlock the secrets of the staff. Only by undertaking a unified assault against Dretchroyas- ter’s lair can the adventurers hope to recover the Diamond Staff and survive the dracolich’s fury. The adventurers must make their way through the lair and recover the Bhaalite idols that will help unlock the Diamond Staff, all the while dealing with the lair’s creatures and avoiding the dracolich as he pur- sues intruders. Entering the Chamber of the Diamond Staff, the heroes must overcome its magical wards and claim the staff before being slain by the dracolich and his servants.

For as far back in time as the tales of history stretch, the area bordering what is now the Lands of Launewt has been a foreboding, practically impenetrable forest. When the lords who ruled the various borderlands united to form the Council of Launewt a century ago, the forest was in the same physical condition as it is now: thick, dark, and expansive, said to be so dense at the center that sunlight pervaded the foliage only on the brightest days. Pgs. 41-56

This adventure focuses on a Zhentarim attempt to spread terror in Mistledale, although it is suitable for almost any lightly settled area northwest of the Sea of Fallen Stars. "The Raiders of Galath's Roost" is suitable for four 1st-level characters, but PCs should be at least 2nd level before tackling the adventure's second half, the Zhentarim Citadel. Even in the first half of the adventure, many of the encounters are quite formidable for 1st-level characters, and the PCs might find it necessary to withdraw and recover one or more times before completely exploring the ruins.

The recent discovery of an entrance to the Underdark has set local leaders on edge. In a display of initiative, the First Lord of Hillsfar has ordered the construction of defensive structures surrounding what locals have begun to call "The Waydown." You have been charged with escorting an emissary back to his home in the Underdark without alerting the Red Plumes.

The Fate of Faerûn Lies in Shadowy Darkness! Daggerdale is reeling from a sudden series of murderous drow raids. As a grave threat to the entire surface world develops in the war-torn dark elf city of Maerimydra, intrepid heroes must discover its source and destroy it, if they can.

This material was originally published as three separate adventures: G1 (STEADING OF THE HILL GIANT CHIEF), G2 (THE GLACIAL RIFT OF THE FROST GIANT JARL), and G3 (HALL OF THE FIRE GIANT KING). Contained herein are referee notes, background information, maps, and exploration keys for three complete adventures using the ADVANCED DUNGEONS & DRAGONS rules. This module can be used alone or as the first in a series of adventures that includes Dungeon Modules D1-2 (DESCENT INTO THE DEPTHS OF THE EARTH), D3 (VAULT OF THE DROW), and Q1 (QUEEN OF THE DEMONWEB PITS). TSR 9058