You can obtain 'Club Cards' through various methods, such as purchasing them in the Shop, opening Bags, or using the Golden Pick.

If you acquire a 'Club Card' for a club you don't already own, you can equip that club. Afterward, you can upgrade the club each time you collect a certain number of its cards.

You can equip or upgrade clubs via the [Locker Room] menu at the bottom of the main screen. Please note that the number of cards required increases as the club level gets higher.