Mr-S---
Welcome, and any additional info you can provide on the Magic Touch cards @
[non-TSR] Mercury Games' Magic Touch Cards - found! would also be appreciated
One of the guys in my D&D group did a promotional poster for MG back in the day, too. If you might still have the original art, perhaps, that would be fun to recover and/or see again!
I don't have any contact info for Dave Elliot, but other folks on the site may.
Allan.