Latest sets supported: Amonkhet, Modern master 2017, Kaladesh, Eldritch Moon, Eternal Masters, Shadows over Innistrad, Oath of the Gatewatch, Commander 2015, Zendikar Expeditions, Battle for Zendikar, Magic Origins, Dragons of Tarkir, Fate Reforged. Functionalities: offline database, don't need a connection or to download something the first time.