My best guess was that seven is one of the more common numbers for card games where you draw cards and perhaps it won out because it was what Richard Garfield thought people would assume to draw
So it's possible Wizards was simply celebrating that date with no ulterior motives but where's the fun in that
This includes a main set of roughly 8386 cards and over 35 secret rares, such as Illustration Rares and Gold Hyper Rares
Booster Pack Pokemon Dark Explorers Keep track of your collection value over time
Collector Boosters Horrify your opponents with Borderless, Double Exposure, Paranormal Frame treatments, Full-Art Manor lands, and Mirror Monster cards
Akim, the Soaring Wind Akim, the Soaring Wind gives you a nice incentive to play with tokens and token generators, giving you a 1/1 flying bird each time you make a token