Cards which were not working properly in Arena mode (Shilard, Síle de Tansarville and Sarah) have been fixed.We are currently working on fixing the visual bug which makes it look like Arena decks can be played in other game modes. While it may not look like it, you are actually playing Arena mode, as is the other player. As such, the wins and losses achieved when the bug is active only count toward Arena.Our team is constantly working on improving server stability. Sorry for the inconvenience.