It already passively shapes up your hand, but it enables so many things from discard decks to madness/mayhem to cast-from-exile strategies that just want another payoff for playing their game
These cards that cycle through your deck and replace themselves to stop you from thinning out your hand when you try to play a tonne of game actions in one turn and are the backbone of what are known as spellslinger decks
And you can experiment with a draft for free, using Draftsim's namesake draft simulator
Assuming You Need to Read Everything For collectors, you need to read exactly zero Japanese to enjoy and evaluate your cards
TL;DR: If someone tries to draw extra cards, they either end up discarding and drawing, or milling instead, so they never actually go up on cards
Crucially, the balance adjustments will only apply to digital-only formats