I don't know much about card Sharps, but sharp cards? I've always thought it was a pretty sci-fi weapon, a playing card made of metal...
They would have to be pretty damn sharp, and somehow protected from each other, maybe little sleeves of plastic between each one. Don't want to metal bumping up against each other.
Do you know anywhere I might be able to buy sharp cards?

EDIT: Anyone have any credibility for this site?