Like Modern Horizons, this set introduces new cards into Modern and other eternal formats without them ever being legal in Standard. It is expected to bring a host of powerful new toolbox cards, strong themes to try out, and several throwbacks.
This time around, Wizards of the Coast promised a higher power level and greater complexity with even more of what players loved in Modern Horizons. Modern Horizons 2 includes special frame treatments, sketch showcase frames and retro frames, and a full range of products for all players to enjoy, including Set Boosters and Collector Boosters. All five enemy-colored fetch lands appear in the set as rares, the only cards in the base set not new to Modern. [source]