From the back of the book:
The Near Now. The Possibility Wars boast many fierce and powerful fighters, but none so feared as the ravagons. Now learn the secrets of the Gaunt Man's most awesome lieutenants.
Tz'Ravok - a dying world battered by volcanic eruptions and constant storms. But from its ashes have sprung the ravagons, winged warriors with the uncanny ability to sense, and steal, precious possibility energy. Duped by the Gaunt Man into aiding him in his quest to become Torg, they can now be found in all the invading realms.
This supplement includes:
Details on the ravagon cosm, Tz'Ravok, including maps and creatures, society, religion and way of life.
Rules for playing ravagons, as well as ravagon character templates.
Descriptions and stats for Warlord Parok and other Named ravagons.
Miracles, equipment and inside information on the ravagons' role in the Gaunt Man's master plan.