We saw Final Fantasy staples like crystals, summons, villainous transformations (in the form of double-faced cards) and towns
Foundations is intended to be a return to the basics, making it easier for new players to really get a handle on building decks, playing different formats, and learning the game
Their only ability lets you exile a card from your graveyard to discover for X, with X equalling the mana value of that card
Swinging with a 20 power Trample creature on turn three is no joke, and can absolutely end the game if your opponent is off to a slow start
Every player gets a Prophetic Beginnings promo card just for showing up, and prizes are classic and clean: one Play Booster pack per win
we can tell that much at least