From publisher blurb:
The Lower Planes are home to many foul and dangerous denizens.
The demon race is particularly dangerous, given their propensity for destruction and the pleasure they gain from corrupting that which is good and lawful.
Formed from the souls of those evil, chaotic souls that succumbed to the worst excesses of sin, these spirits find a new outlet for their destructive desires as embodiments of pure chaos and evil.
Standing above the rank and file of the Abyssal horde are the lords of chaos, from the mysterious moth demons to the mighty fire demon. Descend into the darkest depths to uncover the lords of the Abyssal race, the demon lords, of which Pazuzu is famous.
Uncover new templates for creating spheres-equivalent demons of all levels, including the demon lords. Open the gates to Infinity and unleash the designs and minions of the Sphere’s Bestiary: Demons of the Abyss: Lords of Chaos in the campaign.
For Pathfinder 1st edition and the Spheres of Power/Spheres of Might systems