Confirm with the lighter, thinner text, and on Trainer and Energy cards use the copyright line, which still includes the year 99 on shadowless prints
Kaleido Chick has two other effects which are less relevant than this, but they both still come up
Dwight OLantern, a reference to the Halloween episode where Dwight wore a pumpkin on his head, is a reprint of Reaper King, a scarecrow creature that buffs other scarecrows
8: You get an emblem with "Whenever a creature you control enters, you may have it fight target creature." Then create three 8/8 blue Octopus creature tokens
Thats the same thing as they are thinking or waiting
It's also worth remembering that according to Serebii, more than 10% of all Pokemon card sales have happened since March 2020, so it's fair to say that the market for these cards is huge