• When you collect cards that you already have, they are saved as duplicate cards, and they increase your star balance.
  • You can send your silver duplicate cards to your friends or team members.
    • Duplicate gold cards cannot be sent to your friends or team members.
  • If you have a duplicate of a card, you see a number on the card indicating how many duplicates you have.
  • You can also open Star Chests when you have enough duplicate card stars.