What should I do if I find two large tarot cards missing after unpacking?

First, see if there is a blank card that suits you. Generally, a better tarot card will give a blank card. Can be used temporarily.

If not, =. Sorry, I have to accept my fate. Remember to buy a better one next time.

I suggest you explain to the shopkeeper. See if I can return it. No, we must burn it and buy a new one.