I create quite a few prototypes of card games and board games of my own design. I am often making custom cards for these prototypes. Here is a simple rundown of how you can create custom cards for your own game prototypes, easily and economically.
In the last session of my current roleplaying campaign of D&D 4th Edition, one of the heroes participated in a medieval-style tournament. The competition took place over six rounds, with competitors being eliminated in each round until there were only two left to face off in a climatic final confrontation.