Today, MTGGoldfish revealed that Stoneforge Mystic will be the promotional card of the 2016 Grand Prix schedule for Magic the Gathering. That means this very powerful creature will soon be in the hands of many more players. While Stoneforge is banned in Modern due to her crazy power level, she is still legal in Legacy and sees plenty of play in Commander. Since being banned during her Standard days for her format-warping ability to put Batterskull into play for only 1W, she's become one of the most recognizable creatures in the entire game of Magic.
With Legacy tournament support dying, it's interesting that Wizards decided to print Mystic now. The art is pretty nice, although I'm partial to the original Worldwake art. What this will do is provide Commander players a much cheaper foil printing to "pimp" out their decks and she is indeed a staple in any Equipment-heavy EDH deck. Non-foil Stoneforge Mystics are about $20-25 as of this writing, but foils are over $100. The promo should be much closer to the non-foil price since there will be plenty of copies of these handed out during next year's Grand Prix tournaments. It's good news for anyone who wants this card, but I think most demand will come from Commander players.