13th Age The Book of Demons

Softcover book is in excellent condition.. 104 pages.

The Archmage BANISHES them.
The Crusader CONQUERS them.
The Great Gold Wyrm DEFIES them.
The Diabolist SUMMONS them.
When the world cracks open and the demons attack, what will YOU do?
The Book of Demons takes an in-depth look at the Abyssal enemies of the 13th Agethe demonic hordes whose eternal struggle to shatter reality causes hellholes, dimensional breaches, and other, even weirder assaults on the world.

For Players:

A new demonologist PC class, with three paths: corruption, flame, and slaughter!
For Game Masters:

Six detailed hellholes and their denizens, plus advice on making your own
A new random demon abilities table
Citadels of the Crusader and the Diabolist
Monster stats for nine new demons summonable by player character demonologists

13th Age is a d20 fantasy role-playing game designed by Rob Heinsoo (lead designer of Dungeons & Dragons 4th Edition) and Jonathan Tweet (lead designer of D&D 3rd Edition) and published by Pelgrane Press. 13th Age has been well supported with over 25 supplements published since its 2013 release.