Lotus Petal, originally printed as a lowly common (!) back in 1997s Tempest set, the card has become a combo piece across a variety of formats where its legal, of course and the card retains an impressive price point no matter what printing is sought
We would have had to lean heavier into an artifact build, and even play Mycosynth LatticeMycosynth Lattice, but I didn't want to go there
Its not often R&D gets it right on the first try, but Humilitys board-wide humble effect is one of the best ways to freeze an EDH game in its tracks
4 Vinsmoke Reiju (Alternate Art) - $136.89 Go Go Power Rangers
Other types, like elves, have smaller numbers overall but have a strong and cohesive theme that you can easily build entire decks around
Infinite Guideline Station Infinite Guideline Station is a tough one to pull off because outside of hybrid mana cards, multicolored permanents tend to be more expensive and legendary