57 x 89 card sleeves Sleeve Kings Standard American (57x89mm) 100 Microns, Pack of 55 : Toys & Games There are 75 cards of this size in the game Zatu Games 110 x Wyrmspan Compatible Sleeves (57 x 57 mm) Toys Standard USA Chimera Card Sleeves

Many collectors transport singles in dedicated toploader storage boxes or binders designed for rigid holders

It's not too late to start your own collection and perhaps yield the rewards ten to twenty years from now

Return 2 Fusion Monsters from your Graveyard to the Extra Deck that list a "HERO" monster as Material

They each arrive to the battlefield untapped and ready to tap for their color of mana so that you can basically pull a basic land for them easily enough and there is no tempo loss

You can not activate it during your opponent's turn, and while it is face-down on the field it is vulnerable to being destroyed by "Mystical Space Typhoon", etc