I've traveled to Wonderland, and returned with a special deck of cards!

I will give you the top card of this deck, Player, but only if you give me two Jack Cards.

Don't worry. I've just shuffled my deck. I don't know which card is on top, either!

Player: Accept

Have you returned with two Jack Cards?

Remember, if you give them to me I'll give you a card in return!

Player: "Take them."

Excellent! Now excuse me while I shuffle the deck.

Player: "All right."

Okay! But there are a few things I need to tell you. First, once you make your selection there's no going back. You can't pick again.

Secondly, because I shuffled the deck, the same card might come back up. So, yeah. There's that.

Finally, I'm leaving soon so if you have two of the same card and want to exchange them, you need to hurry!