The Vintage format, formerly known as Type I, has the deepest pool of available cards, stretching all the way back to 1993s Alpha edition, and you can use almost any card ever printed
It may sound obvious, but at the end of the day, Wizards wants every card to have great art. As a result of this, sometimes there will unavoidably be a disconnect between art quality and a cards power
That means that you cant counter them, either, which might cause some anxiety for a good swath of blue players
As such, it's interesting to see Cloud, Midgar Mercenary, at a similar price point, and it makes perfect sense for the Japanese exclusive version of the black Traveling Chocobo to be even more expensive and possibly among the most expensive MTG cards ever