A friend once challenged me to a game of chess augmented with a special deck of cards. Each player gets a handful of cards. On your turn, you get to play a card and then make a move according to the rules of chess as modified by whatever is on the card you played.
At the time, I was in the chess club and my friend was in the “I know the rules” class of chess players. He never dared play me until he got that deck of cards.
Around move 4, I played a card that said “rotate the board by 90 degrees.”. Then I moved a pawn to what used to be the side of the board, promoted it to a queen and said, “checkmate”.
We never played again 
