The next Magic: The Gathering set Rivals of Ixalan won't be out until January 2018 but two cards have already been spoiled from it: a reprint of Silvergil Adept, and just today, Wizards of the Coast has revealed Ghalta, the Primal Hunger. Check it out:
Those who will participate in an Ixalan Store Championship event will receive a copy of this Rivals of Ixalan rare. I'm sure Commander players will have fun brewing decks with this legendary dinosaur, and it might have potential in Standard format. Hopefully, dinosaurs will be playable post-Rivals of Ixalan.
In addition to Ghalta, those who placed Top 8 in a Store Championship event will receive a deck box with new Rivals of Ixalan art:
And of course, the top finisher of each Store Championship event will receive this awesome playmat featuring the map of Ixalan: