From publisher blurb:
YOU HAVE A NEW GAME! YOU NEED NEW MONSTERS!
When the most dedicated and devout of guardians die at their post, they are often given honored burials in pyres, meant to set them at peace. But for some few, the pyre is where they are reborn as unliving guardians obsessed with nothing but continuing to stay at their post forever, becoming defenders of animate fire and smoke. The pyreborn never sleep, never grow tired, and never end their vigil.
Each Monster Omnicron presents one monster (and two stat blocks) compatible with the second edition of the Pathfinder Roleplaying Game, written by experts and fully illustrated.