You can find Multiverse Legends in Draft and Set Boosters in traditional foil and non-foil
Gandalf the White [Foil] #19 Magic Lord of the Rings Keep track of your collection value over time
But sales figures on the website Price Charting suggest that, if the card is in good nick, even the most common first edition Pokmon cards, a Weedle or Caterpie, can go for a couple of hundred dollars
You can instantly see the lowest price for a Near Mint copy, the cheapest Lightly Played copy, etc
Note that if it was forked, you cannot win with it, as that won't count as "casting," but something that casts it for free from a non-hand source will count the first time, so something like Golos, Tireless Pilgrim can count as the first time you cast it, and net you seven life and stack it seven down