"like an enormous pack of cards of the kind planned to beguile King Charles VI"

It was thought that the card game tarot (similar to whist), which uses a special deck of cards associated in the U.K. with fortune-telling, was invented to amuse the medieval King Charles VI of France. This idea is based on the existence of three decks of playing cards painted by Jacquemin Gringonneur in 1392 which are now kept in the Bibliothèque Nationale in Paris. Tarot is now thought to have originated in the fifteenth century in Northern Italy.