When paired with cards like Donatello, Gadget Master, who, as we already know, can create tokens of artifacts you control, Krang, Master Mind becomes a game-changing threat that needs to be dealt with, or your opponents are doomed.
Sure, a lot of cards recovered well from the last two Modern Masters sets, but they had less supply, and MM15 boxes appreciated much less than MM13 before them (partially due to lessened set value)
Its not too difficult to get a massive tempo or mana advantage with a Stern Dismissal without losing card advantage
Wooded Foothills should find a Tropical Island in this situation because it creates stronger lines of play on subsequent turns
Nothing like taking out that Saproling Burst while threatening that last two damage for the win
Thats actually really good, and well worth playing