You can send Duplicates of your Silver cards to your teammates.

1. When you see a card request in the team chat, tap the send button.
2. Confirm sending the card in the pop-up window.

Please note:

- It's not possible to send duplicates of Gold cards.
- If none of your sets has duplicate Silver cards, you won't see card requests in the chat.
- You can send duplicates from both completed and incomplete sets. You can still share duplicates even after you've completed the whole Collection.
- If you aren't part of a team yet, check this article on how to join a team.