Being a red card means you can clear his way with red removals (Lightning Bolt/Unholy Heat)
Shiko and Narset, Unified The best way to break Shiko and Narset, Unified is careful consideration of which spells you want to target with
I don't think it's anything close to being a staple in the vast majority of decks, but it just needs a lot of testing to see which decks benefit from it and, more importantly, how to use it and play against it in those decks
Modern Limited Releases: Focus on cards with documented production limits like Charizard 151 (20k units) or Shiny Charizard VMAX (Champion's Path, 2020)
Gamble, Crop Rotation, and Worldly Tutor The lower brackets do carry the restriction of "few tutors" already
It doesn't copy any information about the object the card was before it was put into a graveyard