I'll give you a list next week if I come up with anything
The Lord of the Rings: Tales of Middle-earth set in 2023 is a good case study: one card in the set, the One of One Ring, was printed as a genuine 1/1, and the speculation alone drove demand for sealed product to significant premiums
This is depicted in a Red, White, and Black card called Fire Lord Zuko, which retains its firebending mechanic, but now has possible combos in MTG tied to ally creatures and casting from exile, which airbending does a lot of
Acornelia, Fashionable Filcher highlights one of the genius elements of un-sets: the ability to leverage aspects of the cards like art to become parts of gameplay
Bent packs do not guarantee you'll pull rare cards in Pokmon TCGP
Monologue Tax is also in the list, but it only triggers to give me a treasure token when an opponent casts theri second spell each turn