You can use cards to build the buildings in your villages. You can earn cards in events, receive them as rewards, or win them on the wheel of fortune. As soon as you have completed a city and it is attacked, you no longer need any cards.
You can use cards to build the buildings in your villages. You can earn cards in events, receive them as rewards, or win them on the wheel of fortune. As soon as you have completed a city and it is attacked, you no longer need any cards.