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
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
In fact, there's so much math, Magic has its own economists on staff and an entire team to crunch all the data we collect to help us understand it
This question becomes crucial to protect valuable trading cards from damage
Thankfully, the deck has some powerful reprints to make up for this, including Jeska's Will, Xenagos, the Reveler and Laelia, the Blade Reforged
If there comes a point where only Auras and no legal permanents left, they stay exiled permanently