Too many crashes first off. Next the rules and whats allowed is not explained well in events or modes. People use cards that make me deck invalid or they just are terrible at explaining it even when you have a basic grasp of the game. That being said it's extremely anti newbie plus if you make a mistake with attacking or not attacking, especially since the buttons are so close together (the same goes for what you target) you cant undo it like other things ( which isnt explained in the tut.