Take, as a famous example, Urborg, Tomb of Yawgmoth
I talked about this in my MTG card size article, but heres a quick recap if you want the quick-and-dirty: For a basic sleeve to protect your cards while playing , you need a standard size sleeve (usually around 66x91mm) For sleeves to store cards in a binder , you want Perfect Fit Size sleeves (usually sized as 64x89mm) If youre looking to double sleeve your cards for extra protection , youll need perfect fit and standard fit sleeves Pokmon cards are the same size as MTG cards, so you can get Pokmon sleeves for your Magic collection if you want Yu-Gi-Oh
WotC would probably lose money to start but players would still have to buy packs or spend a lot of time on the game, even with a dusting system, because the dusting conversion is so steep
[c]Craterhoof Behemoth[/c] is the best example of this kind of creature
You cast the copy while the ability is resolving and still on the stack