the one card mtg MTG's LotR Ring Is Selling For Over $100 [Main] [Draw 2] The One Ring (FOIL Extended

This is still a bit of a luxury card however, it is terrible when you are not also getting another fatty alongside it and that means twice the setup effort for this to be good

Miles Morales/Ultimate Spider-Man (Borderless) This version of Miles Morales is currently fetching close to $65, which is pretty spenny, but much less than it was demanding closer to release when it was sitting at $150 or more

Many Commander staples (cards good in lots of decks) like Sol Ring or Arcane Signet are pretty cheap as singles (Sol Ring around $1.40, Arcane Signet $0.49)

I like Nyxathid since its good against decks that dump their hands naturally, where a 5/5 to 7/7 Nyxathid will be common without much work on your part

If a spell or ability lets an opponent cast a spell as part of its effect (such as suspend and rebound do), that opponent can't cast that spell since the resolving ability is still on the stack