What is a red card and how can I win it?

Every time you win a battle, you will receive a red card as a reward. Cards number can be found in your profile.

More you win battles, the more you get cards and badges.

Note that when you extend a lost battle and you win it you will receive a card. However, cards are obtained one time only, even if you kept winning the same battle multiple times.

Currently, you can only collect cards but not use them.

PS: Cards will be used later to open new features, advertise battles and much more.