This book contains the mechanical elements of the Blades role-playing game. It describes the universe of the Cardinal’s Blades, with a particular focus on the elements specific to alternate history. It does not contain any game system mechanics and can be read even by someone who is not a role-player. You will find detailed descriptions of dragons, their myths, how they function, and their magic. The world of the Blades is also explored here, along with the various nations and their unique characteristics shaped by the presence of dragons. Special attention is given to France and Paris, the favorite playground of the Cardinal’s Blades. You’ll find character creation and the game system, richly illustrated with examples, as well as the mechanics and advice that enable the game master to bring the Blades’ missions to life. Two major scenarios round out this volume. The first is an ambitious introductory scenario that brings the Blades into direct contact with Dumasian mythology. The second plunges the Blades into the Fronde and the draconic intrigues that accompany it.