The mightiest monsters and foulest foes of nightmare and legend rampage intoyour Pathfinder Roleplaying Game campaign with Bestiary 4! Thiscollection of creatures shatters all past thresholds of danger anddestructiveness with phenomenally powerful beings like demon lords, kaiju,juggernauts, and Great Old Ones -- including invincible Cthulhu! Terrorslike nosferatu vampires, clockwork dragons, twisted fleshwarps, and sadistictooth fairies number among the more than 250 monsters collected to challengeheroes of every level of play -- from first-level novices to mythicchampions. New familiars, player-friendly races, and other allies also rise toaid characters in combating this host of horrors, while new templates --like mummified and fungal creatures -- breathe fearsome new menace intoyour existing monstrous arsenal. Strike fear in the hearts of the mightiestheroes and shake the foundations of your campaign with Pathfinder RoleplayingGame: Bestiary 4.