He is awesome in the 99 or leading a Commander deck with this two colors
From then on, the game was all about the Initiative, and I somehow managed to remove his next threat and attack in to gain the Initiative, and then kept developing a board that was just a wee bit stronger or broader than his
According to the development team, active players will be gifted two of every single Kaladesh/Aether Revolt uncommon, one of each rare and mythic rare, and four of 15 pre-selected cards from both sets
Jace, as a result, becomes a lot stronger
The best predictor is EDH use, especially since these are all legendary and likely to be Commanders for decks
Players are given around 20 seconds to review all of the cards and then players take turns picking one card at a time from the fifteen available