For most formats, there's not much public information available on the individuals who make these decisions, but we do know that MTG's Play Design team has some say in what cards are banned
The Ur-Dragon will also occasionally swoop down from the Command Zone and show you that it's actually quite ferocious on the battlefield, too
From the Ashes claims your opponents nonbasics, but it lets them search for basics in their library to replace them
You should basically always be able to get at least two modes to work for you, and frankly I think getting all three to go off is going to happen more often than not
There are box toppers, too, so if youre thinking of grabbing a booster box (which are now smaller and cheaper now, with 30 packs instead of 36), this is a great bonus to go on top of the rest
In general, Korean cards are of a similar quality to their Japanese and English counterparts while not costing as much