I can't run a diagnostic to help with my black screen issues because you only get that prompt when the game is loading. The game loads before the diagnostics finish running.
One thing I wish this game had was a history list of what cards were played, kind of like they do in Hearthstone. Sometimes you aren't exactly sure what just happened and it would be handy to be able to find out.
Was about to go to bed when I discovered this. Curse you for keeping me up most of the night. Very addicting game and I haven't even tried multiplayer yet.
 "War of the Shard"){kind=icon}
 "KingsRoad"){kind=icon}
 "Wartune"){kind=icon}
 "War of Omens"){kind=icon}