This seems to be already the norm for every new set of Magic: the Gathering release. Weeks after Amonkhet was released, Wizards will be holding a premier event called Standard Showdown wherein they have given the local stores special booster

pack prizes. These packs allow you to open a Rare in the current set, another one in one of the previously released sets that are Standard legal, and a foil card, which ranges from an ordinary card to Invocations and Masterpieces. Do note that only the Top 3 or 4 placers will be receiving these and regular Amonkhet booster packs depending on the player’s attendance.

Here below is the detail of the event this coming Saturday at Rei’s Place:

Standard Showdown Challenge
May 13, 2017
Format: Standard, Swiss Rounds
Reg. P90.00
Prizes: 3-1-1 for the Top 4 finishers