gemini yugioh cards Card Parody #3: Spark! may be 1st or Unlimited Edition Yu-Gi-Oh! - Gemini Trap Hole

These are cards like Gorion, Wise Mentor, Storyteller Pixie, Edgewall Innkeeper, Chancellor of Tales, or Lucky Clover

Meren of Clan Nel Toth Meren of Clan Nel Toth is the most playable of the experience counter legendaries from Commander 2015

The closest I could find to anybody doing it in the mainstream recently was Artifact (I know, I know, I'm stretching the word "mainstream" here) with a slightly bastardised version of the concept handled via Steam's marketplace, and even then it's still an online auction house, not just doing fun swaps with your pals and saying "well I've got this, what've you got?", like exchanging the best parts of your packed lunches at school

How many Pack Points does it cost to craft Mantine

Early buyers who got in near release saw multiples on their money, which is part of why it now carries a "should have bought it sooner" reputation