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Fantastic Lairs: 23 Boss Battles for your 5e RPG

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The best 5e fantasy roleplaying games are often the most unpredictable. When the plans of the Gamemaster meet the actions of the characters, the incredible creative energy that results can spin encounters off in different directions, creating a largely spontaneous campaign story that keeps the GM and the players alike on the edge of their seats. But when it comes to the climactic boss battle encounters that cap off single adventures or entire campaigns, it’s often much harder for GMs to work things out on the fly.

That’s where this book comes in.

Scott Gray, James Introcaso, and Mike Shea have teamed up to lighten the load of shaping and developing your game’s climactic encounters. Fantastic Lairs is a book of capstone lair encounters for your 5e fantasy RPG, designed to inspire and fit into your own campaign. Each fantastic lair includes evocative artwork, a beautiful full-color map, and a well-designed and playtested boss encounter for characters of various levels.

The PDF purchase of this book includes the book in PDF and ePub along with a digital map pack suitable for virtual table tops, a 40 page Campaign Seeds supplement, and a PDF appendix of stat blocks for all of the monsters and bosses in the book.

Fantastic Lairs is the joint brainchild of all three members of the design team, each of whom brings a wealth of creative skill and experience to the project. From over fifty initial concepts, the team narrowed down a selection of twenty ultimate boss lairs for development in this book.

Thanks to our backers on Kickstarter, this book includes 23 lairs covering levels from 1st to 20th. Thse lairs include:

Caves of the Cockatrice (1st level). A shadow-infused cockatrice keeps a stone garden in a lair built around an ancient and corrupted fey gateway.

Temple of the Centipede Cult (2nd level). A band of centipede-worshipping cultists feed living sacrifices to their pets in a fallen temple of Asmodeus.

Lair of Lord Wiskers (3rd level). A band of wererats led by the megalomaniacal Lord Whiskers gathers up all the city's silver to be destroyed in their trap-infested sewer lair.

Last Call at Nevermind (3rd level). The Dead Roses, a band of cutthroats led by the murderous bandit captain Adilia Rose, hide out between jobs in a seedy tavern built from a titan's skull.

Nature's Rage (4th level). A blood-drenched druid and a horde of beasts plot revenge against the despoilers of nature in the ruined zoo of a murdered noble.

Ashsnarl's Secrets (5th level). The half-dragon Tharandra Everflame and her kobold minions steer a machine of war and fire through defenseless villages.

Sticky Toffee (5th level). The confections at Auntie Bea's Sweet Treats are more than they seem — as is the shop's night hag proprietor.

Bumpy Ride (6th level). A mage uses his airship and an array of deadly incendiary devices to terrorize other wizards into subservience, and the characters must put an end to it.

The Lamia Job (6th level). The characters must infiltrate a mysterious bank vault to reveal the murderous plots and corrupting illusions of a lamia mastermind.

Ithrix Blackbile (7th level). A young black dragon uses his acidic breath to keep a band of trolls under his sway in an ancient cyclopean ruin.

Those Who Are About to Die (7th level). The characters face waves of brutal combatants and devastating hazards in this arena of blood, death, and fire.

Zengran's Game (7th level). From a lair in an extradimensional emporium of games, puzzles, and other wondrous entertainments, a rakshasa seeks out a group of adventurers destined for greatness.

Curse of Black Ice (8th level). Hunting in the icy wastes for decades, the frost giant werewolf’s hunting ground has expanded into more civilized lands. Now the adventurers hunt the monstrous frost giant to his lair of frozen ice and face his new bloodthirsty followers.

The Blood Palace (8th level). In a lost ziggurat of blood, a sinister spirit naga and its enthralled gnolls need the adventurers' help — to feed their hidden hydra.

Korrington Academy (9th level). An oni poses as the kindly headmaster of an academy for young sorcerers, where he uses a dark ritual to sacrifice faculty members and increase his power.

The Remembered God (10th level). Calathorr, a mighty aboleth who was once worshipped as a god, rebuilds their humanoid cult thanks to clever planning and a stroke of luck. If all goes well, Calathorr will enslave an army of followers even grander than their previous band.

Dragon Mummy's Rage (12th level). In the desert tomb of an ancient dragon queen, a dragonborn mummy lord guards a magical jewel that might destroy the world.

The World Eater (14th level). In an astral sanctum that defies natural physics, the characters battle an ancient lich responsible for the deaths of nine worlds.

Valentyne's Legacy (14th level). A cloud giant vampire moves across the sky in a red cloud castle defended by monstrous thralls and vampire spawn, drawing blood from the land and rising zombies in its wake.

The Forge of Sizzle Death (16th level). A murderous blue dragon forces fire giant captives to forge magic items in a hidden desert cave.

Blade Queen's Throne (17th level). The characters must retrieve a secret word required to save the world — but that word is protected by a powerful marilith for its demon lord master.

Hells' Heart (20th level). In a shattered celestial temple, an ancient gold dragon is possessed by a demon prince encased in a spike buried in the dragon's chest, and threatens the mystical pillar that holds the multiverse together.

Put the Monster Back (20th level). The tarrasque breaks free of a secure facility designed to hold the worst monsters of creation, and will tear through the walls of reality, devouring entire worlds unless the characters stop it.

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Reviews (5)
Discussions (6)
Customer avatar
Ed S February 20, 2023 11:50 pm UTC
PURCHASER
"An updated version of this title is now available."

Which of the five files was updated? Was it all five?

Was the update typos? Art? Errata?
Customer avatar
Christopher S July 06, 2022 4:46 am UTC
What's the page count?
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Customer avatar
Lila V July 06, 2022 9:33 pm UTC
The Pdf is 147 pages long.
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Customer avatar
Christopher S July 07, 2022 1:38 am UTC
Awesome! Thanks!!!
Customer avatar
Joe B September 13, 2021 9:11 pm UTC
PURCHASER
Can we get access to the Foundry VTT license as owners of this?
Customer avatar
Grumpy S February 20, 2021 4:10 pm UTC
PURCHASER
I backed the project on kickstarter because it looked amazing and having had it now since December and having run almost half the adventures in the books I have not been disappointed. The Maps and adventure design is absolutely amazing, and has been ALOT of fun to run. My group has really enjoyed these oneshots as a nice break while our usual campaign is on hiatus, and I've personally enjoyed running them. This book goes above and beyond, and definitely meets the high quality of work I've come to associate with Sly Flourish Products.
Customer avatar
Michael P February 10, 2021 8:41 pm UTC
PURCHASER
So I started using it, and I mostly like it but it's got one essential flaw. It should definitely include stat blocks on the page instead of making refer to another book. Both the modified step walks and unmodified ones. It would make the book much much easier to use. So far that's the biggest flaw in otherwise pretty good book.
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Customer avatar
Terrelle S March 30, 2021 5:38 am UTC
PURCHASER
I don't think they can legally include the stat blocks from other source material such as from Wizard's of the Coast in their product unless they were from the licensed OGL
Reply
Customer avatar
Michael P November 05, 2021 11:16 pm UTC
PURCHASER
Most of the D&D monsters are in one form of ogl or another. And notice there is a file in this set that is all of the statblocks. I just wish they were inline where they should be for ease of use.
Customer avatar
Mark Z February 04, 2021 3:47 am UTC
Having backed via Kickstarter, I have been able to use this Fantastic Lairs with my weekly party and I appreciate the PC view maps, high quality production, and pdf reference for looking/searching ideas. My party decided to intertwine the lairs and perform cut scenes...between boss battles...by picking out select levels and playing through those lairs, using flashbacks to paint downtime and character development between lair runs. High quality output that I have come to appreciate by Sly and the gang. Keep ‘em coming.
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147
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File Last Updated:
February 19, 2023
This title was added to our catalog on February 03, 2021.