The 11 most rare and expensive Yu Gi Oh! cards Dicebreaker Explaining EVERY Yu Gi Oh Rarity Ever Printed Yu Gi Oh Rarity Collection Collecting Elite Fourum The Most Valuable Ultimate Rare Cards In Yu Gi Oh! Bit random, favourite and or least favourite Yu Gi Oh card rarity? Favourite would have to be Secret Rare and least would have to be Ultimate Rare. It works for some cards but I feel YuGiOh Legendary Collection 25th Anniversary Edition Ra, Slifer, Obelisk, Red Eyes, Blue Eyes & Dark Magician Set of 6 ULTRA RARE Single Cards