how many different yugioh cards are there All Rare 20 Card lot with Guaranteed Exodia. : Toys & Games Yu-Gi-Oh Main Set Rarity Guide

Iconic Original Illustration: Features the beloved and instantly recognisable illustration by Mitsuhiro Arita, a cornerstone of Pokmon TCG history

Well, first you'll have to collect so many cards that you have a few duplicates

Best White/Blue Commons in Wilds of Eldraine limited : Cooped Up, Moment of Valor, Frostbridge Guard, Snaremaster Sprite, Diminisher Witch With the Snow Queen deck, you want creatures and cards that help you keep getting ahead by disrupting your opponent and letting you attack

And when you do manage to gang up and kill him, it's not like the Commander tax on a 3 mana leader is overly prohibitive to replaying Leo