Just don't offer them pretending to sell some kind of ultra-rare misprint.
You could also loop plenty of other things, like Spike Feeder, Wall of Blossoms, and Spike Breeder, and there were several other loops possible, such as: And Nowadays, people lose their minds every time a card is banned, but in March of 2000, half a dozen cards were banned in Standard (right after a wave of bannings in December), which was quickly followed up with the first ever Emergency Retroactive Banning of Memory Jar just two weeks later, thanks to Erik Lauer, Randy Buehler, and the rest of Team CMU, who I would estimate is the team that has been responsible for getting the most cards banned in Magic, thanks to their broken decks
However, theyre also needed to eliminate other threats, not only to Shinra, but the whole planet
Overall, however, Id say its still on the easier side of things and might not appeal to hardcore TCG players
Dont get me wrong, we do want to copy those spells, but why only cheat out three mana worth of spells when we can instead copy Sublime Epiphany and Elminsters Simulacrum, giving us 12 mana worth of spells