Shadowverse recently implemented a large update a few days ago that is worth checking out. Various new sleeves was added from both Granblue Fantasy and Rage of Bahamut and they're FREE! A bunch of new leader characters was also added to the game with new voice overs for each one. New leader cards can be purchased with Crystals or Rupees. I ended up buying two of them with the Rupees that I had. Oh, you also get a couple Arena/Draft tickets for a limited time and other things that I probably forgot.