Maybe one with really cool graveyard synergies or one that works well with planeswalkers, and if Wizards really wanted to go crazy they could throw a legacy playable card in one of the decks so it would actually sell copies
Not only does this enchantment reward you with treasure when an opponents creature dies, but you just win the game on your upkeep if you have 10 or more treasures
Some spells like Fierce Guardianship and Field of the Dead can be quite pricey
As a kid I reorganized my collection pretty often however and didnt had any sleeves, so all cards from my youth are in lightly played or worse, lol
The problem with this mechanic is especially evident in staple cards like Fezandipiti ex, which every modern meta deck plays for its ability to draw three cards in the turn after your active Pokmon is knocked out by an attack
Quick Draw Spellslinger decks in red and blue are nothing new, but Quick Draw has a cool Commander in Stella Lee, Wild Card, which gives you access to more spells to cast, and the ability to copy instants and sorceries