From the website:
Based on the original Diskwars game design by Christian T. Petersen and Tom Jolly, Warhammer: Diskwars is a fast-paced, tactical battle game for two to four players that can be played in an hour or less. It has been updated to its new setting within the Warhammer world and features flexible rules for hero-centric army-building. Additionally, whereas the original Diskwars was a collectible game, Warhammer: Diskwars has moved away from the blind buy model, and the Core Set includes everything you need to play the game.
At the core of Warhammer: Diskwars are its disks. Each disk represents a hero or unit from the Old World and comes complete with its own combat statistics, traits, and special abilities.