5 x 6 card sleeves 5x6 Engineered from 60 oversized card sleeves suitable oversized

A raw card is loose

An expensive board wipe is overkill if you just have one creature to deal with, and a single target kill spell is pointless if you're being harried by lots of little creatures

Alternatively, blinking the card will remove the counters, which can be another good reason to do so

The Priest hoses a broad range of effects, including Dredge and Reanimator, Soulherder and Ephemerate, Eldritch Evolution, Collected Company, Through the Breach, and even Ninjutsu

Digital-only cards from MTG Arena and Magic Online add another 6,900 or so mechanically unique cards that have no paper equivalent

Royal Keeper is the sort of mummy guardians you expect to find in the pharaoh's tomb, while Wandering Mummy are probably the rank-and file troops you fight early in the dungeon if this was a traditional video game dungeon