I am sure I am not the only Referee who thought this was a fertile wellspring for creating new terrors to spring on my players and it wasn't unusual to keep a small stack on hand for inspiration during a session.
What's proved a challenge for me is how to read a card into a more friendly format. Well having toyed with it bit I think I may have found a pretty reasonable conversion! This will give you 2 base attributes (ST/DX), MV, AR and damage for monsters. Then you pick the IQ and if there are any special effects, you will have to figure that one out for yourself. No ancient items, or spells or anything else can be converted using the spread sheet, just beasties. Give it a spin and I hope you dig it!