Julius Jumblemorph The Grand Calcutron Grusilda, Monster Masher Hot Fix Ol Buzzbark Phoebe, Head of S.N.E.A.K
If the collector number exceeds the print number (ex: 78/75), it is a secret rare card that is usually worth more than the standard cards
You might be thinking of casting some cheap cantrips like Opt and Consider is the way to take advantage of this, however, there is an even better way
Vintage should be 100% of the list because modern has not stood up to the test of time, maybe the 10k charizard gx for modern but that thing never gets talked about anymore
There are seemingly thousands upon thousands of cards available, and so many different mechanics in play such as EX, GX, VMAX, Rapid and Single Strike, Ancient and Future cards
Cast faithless looting, discard 2 Phoenix