standard usa card sleeves Ryker Mayday Premium 50 Clear Standard American Card Sleeves 56 x 87mm Spiral Galaxy Toys Just Sleeves - Standard American

There are 10 cards per sheet, hence its believed (by some) that 10 copies exist

As the name of the event implies, the XYZ Festival is focused on XYZ monsters

C Common Exarion Universe X DARK Level 4 [ Beast-WarriorEffect ] ATK 1800 DEF 1900 During your Battle Step, if this card attacks a Defense Position monster: You can make this card lose exactly 400 ATK, and if it does, it will inflict piercing battle damage

empty your extra deck while Dreaming Nemleria is on it to Special Summon her and banish all your opponents cards

There are a few important caveats

Utility - Talon Gates of Madara Arguably the strongest land to come out of Modern Horizons 3: Commander , Talon Gates of Madara has so many words on it for just a land