winnie the pooh card sleeves Amazon.com: Ravensburger Disney Lorcana TCG Card Sleeves Featuring Winnie The Pooh – Hunny Wizard by John Loren with over 1 billion cards sold worldwide Disney Lorcana: Official Art Sleeves

I think that there's an alternate direction to take this: Obviously, they're at different power level, but the idea is simple

Destiny Board & Spirit Message cards

This promo card was only available inside a very limited issue of Coro Coro Ichiban magazine (Magazine NOT INCLUDED) in July, 2017

"Pojo's Pokemon Site - Nintendo Gameboy Strategies, Cards, Prices, Pokedex, Tips"

Using data from Collectr, a card tracking app, I found that these 25 cards had risen by an average of 138 percent, or 114 percent, without the Iron Moth outlier

During gameplay, sleeves also have the advantage of allowing you to better distinguish your decks if each player uses their own sleeves