Another in a long line of counterspells that are conditionally better than Drain:
~Adamant Negation
U
Instant - Uncommon
Counter target non-creature spell unless its controller pays 1.
Ferocious - If you control a creature with power 4 or greater, counter that spell instead.
http://www.bigmagic.net/news/0187.htmlThis seems really freakin' scary. Blue Shops seems like the natural home for this card, giving the deck a very quick way to back up Lodestone. Goyf makes a triumphant return to aggro decks (and probably goes up in price because holy crap Modern?!). If your opponent sees just one of these in a game, suddenly all of your creature threats are much higher priority because they might turn on your counter wall.
I don't think this is an auto-include in anything, but if your deck can reasonably field a 4 power creature on turn 1, this seems really, really playable.