Ok, well back in the day I used to use apprentice to make my decks, and to practice play, both solo and with my friends. This program is very versatile,and I beleive could be easily re-furbished to be used for UFS....
You can edit or add your own cards into it.... you can do a lot with it... and even tho it was originally made for magic, you SHOULD be able to use it with ufs...
Can some people with more experience/time/energy/experience check it out and see if you can get it to work?
www.magic-league.com/download/Apprentice.exe
Here is MSE (magic set editor) a program you can use to make the card sets to use for apprentice
downloads.sourceforge.net/magicseteditor/mse2-2009-01-15.exe