Different stores have different techniques, but it generally comes down to something like Mint/Near Mint (M/NM) being the best followed by Slightly Played (SP), and Played (PL), Heavily Played (HP), and finally Poor
This is done with infinite blink loops with Impact Tremors, Agate Instigator, and Purphoros, God of the Force all dealing infinite burn damage to go along with it
In Dominaria Remastered, over 27 sets have been brought into one giant 261-card set that brings some of the most iconic from each
White also has access to Balance type effects, so hypothetically it could make a card that causes some form of universal discard
Each turn, it impulse draws you a card and grants a power boost equal to its mana value
While there is a bit of politics in that you must opt into making it work, in general, it's not the kind of gameplay to be promoted