One of the most INSANE cards ever created -- featuring signatures from eight sports legends including Conor McGregor and Floyd Mayweather -- has just hit the auction block, and it could sell for the price of a brand-new car!!
The piece is wild -- it's got autographs from McGregor, Mayweather, Giannis Antetokounmpo, Steph Curry, Errol Spence Jr., Lionel Messi, Cristiano Ronaldo and Chloe Kim on it ... and Leaf Trading Cards says it's the only one of its kind ever created.