High above the skies of the Dessarin Valley, the Howling Hatred put on a cunning facade as they attempt to control the region. They will not rest until their rivals have been sent spiraling off their lofty perches.
The Howling Hatred is seeking new allies, monsters, and magic to aid them in their mad quest for power. They follow the whims of Aerisi whose very desires change as often as the direction of the wind. Only time will tell if she can harness the power of the storms or be struck down from within.
Explore the inner workings of the cult and its devious ways. Understand who their leaders are, their goals, and the object of their worship Yan-C-Bin, Elemental Prince of Evil of Air
A new adventure, magic items, and spells are available for you to channel for your own Princes of the Apocalypse game. New tools as well to empower the Howling Hatred and guidance on making them the strongest of the elemental cults.
- from the publisher's blurb