Sets with lots of different alternate styles like March of the Machine seem to demonstrate that it's some combination of the two as more popular art styles are worth more than the regular art, while other variants cost far less
Cloud Moogle is an incredibly underwhelming card, but what it implies is a bit more interesting
The first paper Vintage Masters set would have likely arrived at some point in 2014, bringing down prices for dual lands, City of Traitors, Lions Eye Diamond, and others before the first round of crazy Reserved List spikes caused them to go absolutely nuts
So, Azban is made up of the two enemy color pairs that have black, and , and so on
Unlike the disappointing Rayquaza EX Promo, Zygarde EX is at least workable
(Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Destroy target creature or planeswalker