Magic Set Editor, or MSE for short, is a program with which you can design your own cards for popular trading card games. MSE can then generate images of those cards that you can print or upload to the internet. Magic Set Editor also has a statistics window that will give useful information about your set, like the average mana cost, number of rares, etc. When you have finished your set, you can export it to an HTML file to use on the Internet, or to Apprentice or CCG Lackey so you can play with your cards online.