To back check averages three random piles of 50 cards were weighed and the average weight of a card in these piles were: 1.734 g., 1.738 g., and 1.736 g
How to Spot a Fake Shadowless Card Counterfeiters target shadowless cards precisely because the premium is high, and they fake it two ways: by digitally erasing the shadow from an Unlimited scan, which leaves odd blurring or rough edges around the art box, and by simply passing an Unlimited card off as shadowless in a listing
Card not found was a major player in Standard for a while and has made appearances in pretty much all Constructed formats, including some play in Vintage
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This could be a great recurring mechanic in a set that had an off-kilter creature token type (kobolds?) Sorcery Put a 1/1 red kobold creature token otb
But because there are now a bunch of multipurpose, all-star support cards, plenty of these would be straddling different categories