card sleeve keychain ihreesy Key Chain Pouch,PU Leather Case Wallet Zipper Coin Change Holder Mini Credit Card Holder Purse with Keychain,ID Window,4 Card Slot for Men Women,Mint Green : Clothing, Shoes & Jewelry useful for fleet and gas card management and handy for the college student who uses a university ID for swipe access around campus Hillman 5040531 Leather Keychain Card

Most of those cards got played with, damaged, lost, or tossed by parents who had no idea what theyd be worth decades later

I might be wrong, but AFAIK there's no way for a non-Xyz monsters to carry a material

#2 Doubling Season Doubling Season Foundations, Mythic One of the hottest reprints from Magic Foundations is Doubling Season, which remains a fantastic card to open in Play Boosters despite this version being the most affordable copy of the card at the time of publication

Illuna, Apex of Wishes Mutate decks shine with Illuna, Apex of Wishes

Maybe the connection is a creature type, or the cards play well together, or they have some story element in common