The ways to get the card are: classroom, dormitory, library, mini-elf, duel club.
Cards are the fundamental resource of this game and the way to get the most cards in the game. In classroom drama, you can get the library pass of each class for the first time; It is possible to get a library pass by dumping plants in the dormitory every day; Every time you beat your opponent in the mini-elf game, you may get a card from your opponent; In the duel club, you can get some random or fixed cards by upgrading to some fixed positions; The most direct way is to buy a pass and apply for a card in the library. The library is also an important place to test whether players are European emperors or non-Emirates.
This is the way to get the card. You can try it when you actually enter the game.