Fight the Monster in its Den … If You Dare! Book of Lairs brings you 24 great monster lairs for 5th edition! Each of these exciting and unusual battlegrounds comes with a complete short adventure, including a hook, area hazards, tactics, and treasures. Stage your 5th Edition fights in unforgettable locations like: Alchemist’s Guildhall Necromancer’s Cistern Clockwork Tower Den of the Rotten Kings Lost Halls of Everforge A Pirate Cove Crypt of the Warlock Citadel of the Void Dragon A Dark Grove Lost Fane of the Serpents Branches of Yggdrasil Tomb of the Scorpion Prince Sky Stairs of Beldestan Imperial Ghoul Outpost Umbral Vampire Lair And 10 more! Designed by some of the top names in the RPG industry, Book of Lairs is sure to add an aura of wonder and mystery to your game! Book of Lairs uses standard monsters as well as surprising new creatures from Tome of Beasts, and both monster books are required for maximum playability.

A venom maw hydra lair suitable for four or five 10th-level characters. The Red Craw Marsh, so called because of the delicious and plentiful red crayfish that live in the area, is a boon to the nearby village. More than a few intrepid souls brave the swamp each season to collect the crayfish. They either sell the crayfish to local establishments or ship them to nearby cities, where they earn a good price as the crayfish is a delicacy among the wealthy. The villagers have established a tentative peace with a clan of trollkin that inhabit the swamp. The crayfish collectors pay a small fee to the trollkin, who allow them to ply their trade in the marsh without (much) interference. It is a tense but profitable relationship for all involved. A powerful creature has moved into the marsh, however, threatening the delicate balance. When a venom maw hydra decided to move to the area of the marsh between the human and trollkin villages, it brought along a number of creatures that worship and serve it. This hydra and its allies have killed some of the crayfish hunters and some of the trollkin. Each side, unfortunately, believes that the other has broken the truce, thus stirring up animosity and putting both groups on the verge of war.

"The Alchemists' Guildhall" is a rusalka lair suitable for four or five 6th-level characters. This adventure can be completed in one session.

An ancient palace constructed by the mighty Wind Lord Boreas has a new master: the gnoll sorcerous matriarch Odjanbago and her clan—the Archthieves. With the flying Sky Palace at her command, Odjanbago’s legendary clan of thieves and killers have cast a shadow of fear over the Southlands’ northwestern desert. All tremble in fear of the Archthieves, from the jinnborn tribes of the Dominion of the Wind Lords to the priests of Bastet in Nuria Natal. Even lords of Midgard’s Seven Cities grow uneasy at their mention. Whether they hail from the Southlands or elsewhere in Midgard, the PCs must shoulder the responsibility of ending Odjanbago’s reign of terror.

Nightmare of Blood! The village of Karvolia has paid its annual tribute of blood to the Red Goddess—but this year, none of the donors returned. Now the priestess commands the village elders to send another dozen young men and women to the edifice of stone that looms on the cliffs overlooking the village: the dreaded Blood Vaults. The terrified elders are willing to pay adventurers handsomely to find a way to make this second tribute pass them by. Unfortunately, the latest set of donors has already entered the Blood Vaults, and are being prepared for the donation process…

A great threat lopes toward a small city at the edge of a wasteland. One of the leviathans of the wasteland, a gigantic malevolent creature known locally as a “walker,” appears to be on a course directly through the city. The PCs are called to heroism by the city’s council, who have learned that the walker is being directed by a foul darakhul who has gained control of the creature and directs it from atop its shoulders! Scouts have discovered a portal used by the ghoul to teleport atop the walker. With a hastily scrawled map, the party must navigate the wild hills to locate the magical doorway. In this epic and deadly adventure, the party must navigate wild hills, locate a teleportation portal, and slay the Darakhul and his minions on teetering platforms built atop the shoulders of the walker.

"Bloodwood of the Cruor Circle" is an alseid and blood hag lair suitable for four or five 10th-level characters. This adventure can be completed in a single session. The Cruor Circle, a coven of dark druids led by a blood hag, has taken over control of the local alseid herd with the power of the blood. Within the forest, those who do not make proper sacrifices are stalked by the alseids and taken to the Bloodwood. Within the Bloodwood, captives become blood sacrifices, empowering the creation of sap demons, blood ponds, and other twisted products of the dark druids.

"The Hive" is a spawn of Arbeyach lair, also featuring giant termites and termite swarms, for five 6th-level characters. This adventure can be finished in one session. Several mounds in the Forsaken Hills are the dens of voracious termites that have added flesh to their diet to supplement dwindling wood supplies. At night, swarms of termites hunt and devour prey. They swarm over victims in wooden carts and wagons, and bring the dismantled wood back to their mounds. Three spawn of Arbeyach, searching for a location to summon Ia'Affrat, Arbeyach's herald, discovered a mound filled with particularity nasty termites and used their vermin empathy to gain acceptance. They dug out a cavern beneath the mound, and now use the termites to protect themselves and gather food while they complete a difficult ritual involving dozens of sacrifices. The final sacrifice is prepared and the spawn are finishing their ritual when the party arrives.

Citadel of the Void Dragons is a void dragon lair suitable for four characters of 14th level. It is a logical sequel to Sky Stairs of Beldestan, but it can be played independently. The void dragon Astraxis and his mate, Yrsinestra, have long lived in an orbital citadel where the sky meets the void. This location allows the dragons to communicate with malign creatures of the void and still enables them to feast on the whales, cattle, and other large animals of the firmament below. This ready food supply is urgently needed right now, because the mated pair has recently laid a clutch of eggs. As a result, Astraxis is almost never at the lair—he is constantly on the hunt, bringing food to Yrsinestra and often sleeping on the earth below the citadel.

"The Clockwork Tower" is an azza gremlin lair suitable for five 3rd level characters. This adventure can be completed in one session.

The earth churns in a city graveyard, revealing not the undead but an ancient war machine. A great iron transport bores its way up from depths below, disrupting funeral rites and sending the citizens into a panic. With an opportunity to investigate and reap the rewards of bravery, the party closes on the graveyard. There they discover that the pilots of the strange vehicle are soulless automatons who have spent an eternity burrowing toward the battlefront of a long-forgotten war. In this action-packed and gritty adventure, the party must battle automatons, breach the iron transport, and put down its mad and malfunctioning commander.

She lay down her sword and wept; her tears are the water. She lay down her body and slept; her bones are the fountain. Atop the mountain, at the war’s end, a place for gods to wonder.

"Ruins of the Umbral Tower" is a shadow fey hunter lair suitable for four or five 8th-level characters. This adventure can be completed in a single session. The ruined Umbral Tower rests deep in the forest, in a marshy region avoided by all but songbirds. Long abandoned by its original occupant, the tower features a malfunctioning gate that connects this place and the Plane of Shadow. The site serves as a base for a group of shadow fey hunters and their entourage of hounds and guardians. The hunters used the gate to travel from their home plane, and they now attempt to bag as many trophies and as much loot as possible before returning home when the gate reactivates.

The mountains are the border between our kingdom and the realm of the fire giants. Look far eastward. See how the peaks turn black? Their forges must burn night and day to mark the mountains so. Some mornings, sunrise dims from the smoke and soot. Long have we watched the pass and tallied our fortunes at its stillness. Recently, though, there are signs our luck is turning. Fiery orbs sail through the night skies and land too near these woods. Scouts report deep craters shrouded in smoke and ash. One sits a mere hour’s walk from this outpost. I fear the enemy makes ready some terrible weapon . . .

Beware the night-things, strangers!

What happens when adventurers become the owners of a brothel? When a roguish associate asks them to attend an oligarch’s party in his place? What lurks in the Cartways besides kobolds? And what will you say when another thief tells you the only way to find a treasure is to become hunted by the Praetors? Dark dealings, my boys, and a knife in the guts might be the price. Whose guts? Might be yours if you cross the wrong one of the Nine. How much evil should be done for the greater good? How many sinful men should die to save a pure soul?

Suitable for four PCs. Adventure can be finished in one session. Several months back, Dip Halfling-Chewer and his cronies were ejected from a nearby goblin clan for indiscriminate wrestling. Their antics, although hilariously entertaining to themselves, were destructive and dangerous to the rest of the clan. The goblins spent several nights in the wilderness before discovering an abandoned wagon by the side of a trade road. There, the homeless cadre transformed the wagon into distinctly goblinoid fortress. They have had some success in assaulting and looting travelers on the road.

A welcoming desert oasis offers respite from the searing wasteland, but this paradise has perils. Castle of Sand is suitable for three to five 4th level characters.

A Collection of Dark and Daring Adventures What happens when adventurers become the owners of a brothel? When a roguish associate asks them to attend an oligarch’s party in his place? What lurks in the Cartways besides kobolds? And what will you say when another thief tells you the only way to find a treasure is to become hunted by the Praetors? Dark dealings, my boys, and a knife in the guts might be the price. Whose guts? Might be yours if you cross the wrong one of the Nine. This 112-page supplement and adventure anthology is set in the seedy underbelly of Zobeck, and on its mean streets you will find: Seven adventures dealing with underhanded themes, shady locations, and double-crossing deals gone wrong Six locales including the Cartways Market Gallery or the Old Stross Municipal Baths. A dirty dozen NPCs: kobold gearsmiths, failed Arcane Collegium students, barge captains, fey and undead ambassadors to use as rivals, patrons, peers and foes A sampling of new clockworks, street magics and odd enchantments that make Zobeck the distinctive jewel of the River Argent! You probably shouldn’t bring the paladin along on this one… This official Midgard adventure anthology is easily portable to any setting. Designed by Ben McFarland, Chris Harris, Matthew Stinson, Christina Stiles, Mike Franke, and Richard Pett.

The trouble began several weeks ago when a duergar excavation team went to work in a long-abandoned temple. Drawn to the temple by stories of riches and artifacts, the duergar hired several giants as laborers before cracking the temple’s sealed doors. The largest of the giants, a loathsome Thursir mutant named Huppo, used his acidic vomit to expedite tunneling into the temple’s collapsed hall of worship. Then, Huppo found the horn—an unusual instrument made from a single piece of stone, with a mouthpiece so intricate only a master carver could have made it. The horn became the giant’s obsession. Seeing only the horn’s potential sale value, the dwarves demanded Huppo turn it over to them, but Huppo refused. To force compliance, the dwarves stopped feeding the gluttonous brute, but Huppo had already found his own source of food; in deep areas of the temple, worms were chewing out of the rocks, and Huppo ate them by the fistful. He also played the horn. Then, after several days of blowing the horn and devouring the strange worms, Huppo released a belch so noxious the dwarves had no choice but to lock him in a sealed chamber and carefully consider their next move. The horn’s call, however, had caught the attention of passing nomadic orcs. They set up camp outside the temple entrance in the hope of finding the horn and its player. That’s the current situation at the temple: the giant refuses to stop blowing the horn and belching out deadly clouds of stomach gas; the dwarves are frightened and edgy while their leader is obsessed with malevolent whispers; orcs are threatening to overrun the place; and the population of worms grows steadily as something awakens deep in the stone beneath the sanctuary of belches.