european card sleeves Perfect Fit Premium (59x92mm) -55 Pack, 100 Microns SKS-3304 This is actually the MOST common mini MDG8803 Mayday Games Sleeve Kings:

Yet, there are cards that realistically not a lot of players will ever own, be it because of print restrictions or simply their price

Nicol Bolas, Planeswalker : As apropos befitting an evil mastermind like Nicol Bolas, he can ultimate immediately with a Doubling Season in play to annihilate someones board, hand, and life total and stick around for more fun

When I went further back, to 2017, I found an article I wrote on domestic arbitrage

At 3-mana and with the legendary specification, I think Kassandra, Eagle Bearer isnt too expensive and points to a specific enough build that it has legs

These are cards that are only available at certain events

Once per turn: You can banish 1 Level 7 or lower "Gem-Knight" Fusion Monster from your GY