The Stars are Right! Sandy Petersen's Cthulhu Mythos is the definitive volume of all things Cthulhu for the Pathfinder Roleplaying Game system. Sandy Petersen, the author of the Call of Cthulhu roleplaying game (and first game to feature and extensively explore the Cthulhu Mythos) now presents with James Jacobs, Arthur Petersen, and Ian Starcher an updated interpretation of Great Old Ones, monsters, cults and cultists, magic, artifacts and other Cthulhu lore. Inside you'll find over 40 new Mythos monster stat blocks, as well as a separate bestiary of over 60 stat blocks of Mythos monsters reprinted from Pathfinder Roleplaying Game source books. Together with over 100 monsters, this book serves as a one stop source for any Mythos monster encounter for your game! New rules for encountering Great Old Ones, the vast cosmically powerful entities of the Cthulhu Mythos, are presented as well. Cthulhu and his friends are far too powerful to serve as mere encounters with a normal stat block. Instead, this book presents them with an Elder Influence stat block, created to represent beings of enormous power. There are 25 Great Old Ones presented, from Abhoth to Yog-Sothoth, the Opener of the Way! It includes four new playable races: Dreamlands cats, ghouls, gnorri, and zoogs, as well as character options for all. To add flavor to your campaign we designed special insanity rules and included an enormous section on the cults and cultists of the Mythos. There are forty new spells, plenty of magic items, and a new magic system of rituals for cultists to use. This book is the most complete and comprehensive sourcebook for all things Cthulhu. We hope it does not drive you insane! Sample file We would like to dedicate this Sampletome to our spouses and familiesfile who tirelessly supported us during its writing and development. And to he who must not be named. petersengames.com Credits Petersen Games Authors Great Guidance Ro-Man Sandy Petersen, James Jacobs, Arthur Petersen, Ian Starcher, Sandy Petersen David N. Ross Business Manager Development Ian Starcher James Jacobs, David N. Ross, Ian Starcher, James Frashure, Zach Starcher, Project Director Grant Petersen Arthur Petersen Co-developer for Eremite Art Director Paul Bettner Penny Platt Co-developer for Abyssal Custodian Sales Manager Dennis Colburn James Frashure Co-developer for Ghatanothoa Game Developer Jeffrey Hersh Lincoln Petersen Co-developer for Eye of the Watcher Shipping and Conventions Evan Keller Andrew Lucio Co-developer for Gobogeg Community Relations Matthew Morris Pit Lanrezac Co-developer for Slime Molds Marketing Ken Trbovich Gamerati Editing and Proofreading Website Manager Eytan Bernstein, Erik Scott de Bie, Lyz Liddell Tanya Carter Additional Proofreading Community Support Coordinator Thomas Weber Jamie Bergman Cover and Interior Artist Kent Hamilton Key Supporters Additional Art Cody Mcclurg Richard Luong Max Zaleski Layout Sheri Starcher Liz Courts, Penny Platt Miniatures Painters Director Rich Fleider Miniatures Painters Avalon (Starcher) Zalinkski—IronBrushStudio.com Ian Phillips—instagram.com/irontuskminiaturepainting Roy Duffy—facebook.com/roy.duffy.92 Chris Ewick—TheGameMatrix.com Miniatures Photographer Sheri Starcher Key Playtesters Elvin Do, Patrawadee (Pann) Yenbut, Siriwadee (Paww) Yenbut, Hector Steve Rojas-Luna, Jacob Starcher, Zach Starcher, James Frashure We also want to thank all the many other people who playtested the material in this tome at conventions and elsewhere. Sandy Petersen’s Cthulhu Mythos, © 2017, Petersen Games. Printed in China. ISBN-13: 978-0-9995390-0-2 Collector’s Edition: ISBN-13: 978-0-9995390-1-9 Product Identity: The following items are hereby identified as Product Identity, as defined in the Open Game License version 1.0a, Section 1(e), and are not Open Content: All trademarks, registered trademarks, dialogue, plots, storylines, locations, characters, artwork, and trade dress. (Elements that have previously been designated as Open Game Content or are in the public domain are not included in this declaration.) Open Content: Except for material designated as Product Identity (see above), the game mechanics of this Petersen Games game product are Open Game Content, as defined in the Open Gaming License version 1.0a Section 1(d). No portion of this work other than the material designated as Open Game Content may be reproduced in any form without written permission. SampleCompatibility with the Pathfinder Roleplaying Game requires the Pathfinder Roleplaying Game from Paizo Inc.. See http://paizo.com/pathfinderRPG file for more information on the Pathfinder Roleplaying Game. Paizo Inc. does not guarantee compatibility, and does not endorse this product. Pathfinder is a registered trademark of Paizo Inc., and the Pathfinder Roleplaying Game and the Pathfinder Roleplaying Game Compatibility Logo are trademarks of Paizo Inc., and are used under the Pathfinder Roleplaying Game Compatibility License. See http://paizo.com/pathfinderRPG/compatibility for more information on the compatibility license. Table of Contents CHAPTER I: GETTING STARTED . .VI CHAPTER VII: CULTS. .170 UsiNG THis BOOK . 1 INTRODucTION TO CULTS. .171 WHAT is THE CTHULHU MYTHOS?. 2 BLACK GOAT CULT. .172 HOW TO BRING HORROR TO HEROic FANTASY. 3 CRAWLING CHAOS CULT. 174 CTHULHU CULT . .178 AZATHOTH CULT . .180 CHAPTER II: MYTHOS RACES . 8 OPENER OF THE WAY CULT. .181 THE MYTHOS PLAYER CHARACTER RACES. 9 CULT OF THE SLEEPER . .182 DREAMLANDS CATS. 10 WINDWALKER CULT. .184 GHOULS. 18 YELLOW SigN CULT . .186 GNORRI . 28 LEssER CULTS. .188 ZOOGS . .40 TCHO-TCHO CULTURE. .192 DEEP ONE CULTURE . .195 HAPTER HARACTER PTIONS C III: C O . 52 MYTHOS ENTITIES AND RELigiON. .198 CHARACTER OPTIONS . 53 OTHER RACES AND THE MYTHOS . .200 COMPANION OPTIONS. 70 NEW PROFEssiON AND FEATS. 75 CHAPTER VIII: GREAT OLD ONES RACE OPTIONS. .80 AND OUTER GODS . 202 AS A FOULNEss SHALL YE KNOW THEM. .203 CHAPTER IV: INSANITY AND DREAms. 88 GREAT OLD ONES, OUTER GODS, AND THEIR ILK. .204 INSANITY AND DREAms. 89 Abhoth ................................... 208 IA! IA! CTHULHU FHTAGN: AN AKLO PRimER. .100 Atlach-Nacha ...............................212 THE DREAMLANDS. .103 Azathoth, the Daemon Sultan ..................215 Bokrug, the Water Lizard. .218 CHAPTER V: MAgic . 106 Byatis the Serpent-Bearded ................... 222 MAgic AND THE MYTHOS. .107 Chaugnar Faugn ............................225 Spell Lists ..................................108 Cthugha .................................. 228 Spell Descriptions ...........................114 Great Cthulhu ..............................232 RITUALS. .126 Father Dagon .............................. 236 Ghatanothoa ...............................239 CHAPTER VI: MYTHOS ITEms AND ARTifACTS . .142 Gobogeg .................................. 243 INTRODucTION TO MYTHOS ITEms AND ARTifACTS. 143 Hastur the Unspeakable ...................... 246 ALCHEmicAL ITEms. .144 Ithaqua the Windwalker ......................250 ALIEN AND BizARRE TECHNOLOGY. 149 The King in Yellow ..........................254 ARTifACTS. .154 Mother Hydra ..............................259 BOOKS OF THE CTHULHU MYTHOS. .155 Nyarlathotep, the Crawling Chaos .............. 262 MYTHOSampleS MAgic ITEms AND ARTifACTS. .163 Nyogtha ................................... file265 iii Quachil Uttaus .............................267 Moon-Beast ................................354 Rhan-Tegoth ...............................270 Nightgaunt .................................356 Shub-Niggurath .............................274 Outer Mutant, Abomination, and Spawn .........358 Tsathoggua, Father of Formless Spawn ...........278 The First Stage: Outer Mutant ..................359 Tulzscha ...................................281 The Second Stage: Outer Abomination .......... 362 Ubbo-Sathla, The Tome Keeper ............... 283 The Third Stage: Outer Spawn ................ 364 Yig, The Father of Snakes .................... 286 Satyr, Mythos ...............................367 Yog-Sothoth, Opener of the Way ............... 289 Serpentfolk ................................ 369 Servitor of the Outer Gods .....................371 CHAPTER IX: MYTHOS BESTIARY . 292 Shantak ...................................373 INTRODucTION TO THE MYTHOS BESTIARY . .293 Shoggoth ..................................375 Abyssal Custodian .......................... 294 Shoggoth, Proto- ........................... 377 Bhole .................................... 296 Shub-Niggurath, Daughter of ..................379 Bhole Hatchling. 298 Slime Mold ................................381 Brain Cylinder ............................. 300 Star Vampire ...............................383 Byakhee .................................. 304 Starspawn ..................................385 Colour Out of Space ........................ 306 Tcho-Tcho ................................ 388 Dark Young ............................... 309 Undead, Mythos ............................391 Deep Ones .................................312 Watcher of Green Pyramid ....................393 Denizen of Leng .............................318 Wendigo, Ravenous ......................... 396 Dhole .....................................320 Wendigo, Windwalker ........................398 Dhole Hatchling ............................322 Yith, Great Race of .......................... 400 Dimensional Shambler ........................324 Zoog .................................... 404 Elder Thing ............................... 326 ADVANCED ADVERSARIES. .405 Eremite Symbiont ...........................329