Doomsayer's Codex Primer: Guide to Athyr

From the Intro:

Welcome to the Doomsayer’s Codex Primer: Guide to Athyr! This book is an extensive excerpt of the full Guide to Athyr, one of the three core books of the dark fantasy tabletop roleplaying game Blood and Doom that you will be able to back on Kickstarter. To get even more great Blood and Doom material, simply join us on the 4th of April 2023 to back the game and potentially also get our Doomsayer’s Screen, custom dice, card sets, miniatures, soundtrack, adventures, and much more!