Whatever the best players come up with will stress-test the format, but the general population will bring what theyve seen players have success with online so far
(Note1: if we also include unofficial Sample cards and such, SNAP Pikachu would not even be in the top 5 in terms of quantity, since there is the 1 of 1 Japanese 1996 Sample card
Corpses, whole or in part, are the standard currency among necromancers and demons
They have printed hundreds of millions of cards since the TCG game first made it's debut and they've just launched their latest series of cards called Scarlet & Violet
I'm also going to focus on the details of the current flood of fakes
Cards like Mana Leak, Miscalculation, and others all share the fundamental flaw of being counterspells that get worse as the game goes longer, which is generally the opposite of what a conventional counter does