They keep changing cards skill event after we buy them we money, and making them rather useless which not worth the money we spent on them, and even after contacting the devs to undo the changes to paid cards, on top of taking super long to reply they refused to undo the changes or compensate those who bought the cards, which really rises the question on what are we buying in this game? cause surely it's not the card. The Devs showed not interest and most of the time they tried to ignorant and ignore the fact that they changed the cards skills after been purchased by players, to weaker skills that rendered the cards useless compared to the payment to get them.