Objective: Enhance user engagement and satisfaction by allowing users to swap common cards, promoting to swap useless or left players.

Details:

Frequency Limit: Users can swap common cards a maximum of once per day or up to 5 cards per week.

User Interface:

Integrate a user-friendly interface within the platform for card swapping.

Clearly communicate the frequency limits to users during the swapping process.

Notifications:

Implement notifications to inform users about the availability of their daily/weekly card swap.