How do I get more cards in my deck?

There are several ways to get more cards to play:

The main source of extra cards is the Extra Cards Booster;
You can get more cards by sequentially removing cards from the table without using your deck. Once the streak is completed, you will be rewarded with boosters and extra cards;
If you run out of cards in your deck during a level, you can buy them for coins;
You can get extra cards by playing the Amazonia Treasures event.