square card sleeves Small (Pack Of 100) 70 x 70 mm Acid free Fantasy Flight: Board Game Sleeves

These five cards are held back only by the fact that they are legendary, meaning that you can only have one of each in play, and they do not possess the basic land tag, meaning they cant be fetched by cards like Rampant Growth

For games that get grindy, Craterhoof Behemoth and Worldly Tutor provide a possible win condition

UR Ultra Rare Time Thief Perpetua X DARK Rank 4 [ PsychicXyzEffect ] ATK 1900 DEF 2500 2 Level 4 monsters During the Standby Phase: You can detach 1 material from this card, then target 1 "Time Thief" monster in your GY, except "Time Thief Perpetua"

This drove the hype for the set even higher with individuals and businesses offering hundreds of thousands of dollars before the card was even opened