• When you collect cards that you already have, they will be converted to duplicate cards.
  • The number of duplicate cards will be visible on a card within a set.
  • You can send your duplicate cards to your friends.
  • Collecting duplicate cards will grant duplicate card stars.
  • Obtaining a duplicate card increases your duplicate card stars balance by the same amount as the star value of that duplicate card.
  • You can open duplicate card chests depending on the number of duplicate card stars you collect.
  • Duplicate card chests are located in the top right corner of the collection section as a chest icon.