If you want to take things to infinite combo territory, Samwise Gamgee also has that in spades
Dakkon, Shadow Slayer While Dakkon, Shadow Slayer is a cheap Esper planeswalker at only 3 mana, it's arguably better to cast it later during the game as it's very likely youll have many lands at that time, and therefore, Dakkon enters the battlefield with more counters
Here, my primary concern isn't speculators or collectors but the poor college kid on Reddit trying to put together a Modern deck that ends up with fake Mox Opals off eBay, or the new player who thinks they are getting a good deal on some Modern staples to build their collection off Craigslist and hasn't played enough Magic to realize the cards are fake
Aside from its combo with Exquisite Blood, it's a large deathtoucher and a huge boost to any sacrifice decks
When buying expensive copies, graded is safer
Promo cards Only one promotional card has been revealed, the buy-a-box promo card Vorpal Sword