arkham horror card game scenarios LCG: Film Fatale Scenario Pack NO mini card included Arkham Horror (LCG): Stand Alone

Prior to this, the most expensive Pokmon card ever sold was also a Pikachu Illustrator, auctioned off for US$195,000

If it's casual it counts

Tenpai is a massive strategy, they knew that Trident Dragion was a huge part of said strategy, and then they decided to not include it in Rarity Collection II even though it hasnt been printed since 2014

Going Wide Riders of the Mark is excellent if you control a bunch of humans, and you can cast it for cheap

R Rare Neo Super Quantal Mech King Blaster Magna X LIGHT Link 3 [ MachineLinkEffect ] ATK 2500 DEF - 2+ Effect Monsters including a "Super Quant" monster This Link Summoned card cannot be destroyed by your opponent's card effects