"You haven't seen anything like this before?" Gen asked her, as he produced a deck from the game's carriage and then began shuffling the cards.

If her eyes were very sharp, maybe she'd even be able to spot there's no magic being used. Just slight of hand, like a thief.

Gen spread the cards after shuffling them, and told her, "Please, my dear, pick a card, any card. Memorize it ..."

He split the deck in half once she took the card, like he was going to shuffle it once more, and invited her, "and then place it back here, please."