you should make that game free to play online. Cards could be discovered/earn by experience and money earned in duels. And you could earn money from the business model similar to that in world of tanks or war thunder. its far more successful i think. just a idea:) I was a big fan of MTG. Good job anyway.
bug with poison. going in minus 0. need to wait to regenerate opponent energy and then attack after regeneration above 0. opponent dont attack u when heath below zero.