A simple frame made to hold 6 Pokemon cards that have been cut out to form a shadowbox. All you need to do it cut your cards for each layer of the box, insert them in order into the slots in the frame, and then glue the base into place.

I would recommend leaving the last card in the stack unaltered so it can serve as a background.

It was made for cards with dimensions of 6.3 x 8.8 centimeters, so it should work for many other card games as well.