Its easy to run out of cards because even though you start with a hand of seven and draw one card per turn, every turn youll typically be placing one card into your Inkwell and playing one or two characters/actions/items, so after four or five turns your hand will be empty
There was a point where the card was literally everywhere, as Izzet Murktide decks and beyond utilized full playsets
Doing this also grants 1 Lore token for each item card moved this way, meaning with some proper planning, Belle can get the player a ton of Lore points
Morphs Mimicry ability lets you play any character with a shift ability over Morph
The idea is that at individual scales the additional load is ignorable, but at mass scraper levels it adds up and makes scraping much more expensive
Moving up the curve just slightly, we have the only hard sweeper currently in the game Be Prepared