You could do it on the back of the two top pocket but the two bottom you cant obviously, but you can hardly see the overlap or the adhesive strip
Resolution matters the sharper the image, the crisper your finished card looks
I dont think Plusle will outclass Cleffa, but it is a good alternative and should be kept in mind
But some of the cheaper ones seem like they might tempt certain Legacy archetypes with their synergies and any cares about artifact cards are always worth a look for Vintage, especially if theyre Tinker-able themselves
Banishing one card from each of your opponents hand, field and graveyard upon summoning was just the start, while Unicore would negate the effects of all monsters summoned from the Extra Deck
RS has mewtwo, Dragon has zard and ray, tmta has suicune