To trade cards for chests in Coin Master, start by launching the game on your mobile device. Once the game is open, tap the Card icon or the three horizontal lines on the right and select Card Collection. This will take you to your collection of cards.
Next, click on the Starred Chest icon to access the Cards for Chests feature. Here, you can choose the cards you want to trade by pressing the plus or minus buttons next to each card. Ensure the total stars match the required number for the chest you want.
After selecting the cards, tap the Trade button to exchange them for a chest. The chest will contain random rewards like Coin Master spins, Pet XP, and more cards. Each chest requires a specific number of stars, which the feature automatically selects from your lowest cards.
If you want to skip the countdown timer after trading, you can use Gold coins. Enjoy your new rewards and keep trading cards for more exciting chests in Coin Master!