Card Trades themselves are set up by players over different platforms such as Facebook Messenger. To send a card:
- Open your card collections by pressing on the card icon found at the bottom left corner of the screen
- Tap on the set containing the card you want to send.
- Tap on the card you wish to send and then on the Send button which will open up a list of friends.
Keep in mine, to send a card in Coin Master, first the card you want to send must have 2 or more cards
As the picture above, tap on Ask button to get the link then send that link to friend to request the card you need.