This A Miraculous Guide to Gwent was added as part of Patch 1.20. It displays number of gwent cards missing from Geralt's base-game collection and information on where to find them, thus facilitating completion of the quest titled Collect 'em all. This book can be obtained either from Aldert, player of gwent during Prologue at White Orchard inn or from merchant near St. Gregory's Bridge in Novigrad, Gildorf district.