Hi, Player! I've just returned from Wonderland and am dying to show you this deck of cards!

If you give me two Queen Cards, Player, then I will give you the top card of my deck.

I just shuffled all my cards, so I don’t know either which one is on top.

Player: Accept

I'm looking for two Queen Cards. Have them?

The sooner I have those cards, the sooner I can give you a card!

Player: "Here. Take them."

These are exactly what I was after!

Give me a moment while I shuffle the deck.

Player: "Sure."

Great! But, um, you should know that once you make your pick, that's it. No take backs.

Also, there's a chance that the cards you just gave me may show back up in the deck.

Oh, yeah! I'm also leaving soon. So if you have duplicate cards you want to trade, I suggest that you hurry up. Thanks!