Drifter
Blue seems fantastic this set, with a really high power level across the board, and not too many duds at common. Compared to previous sets, it seems to lack its usual weaknesses: it has plenty of good removal, great blockers, and tools to win races, while maintaining its classic strengths: card advantage, lots of evasion, the ability to play at instant speed, and tools to swing tempo. Blue plays an unparalleled long game in this set, with so many efficient card draw spells, ways to slow your opponent down, and creatures that play the defensive and offensive roles both really well, like Mistwalker. Blue’s main weakness is that many of its common creatures are sort of understatted and underwhelming – it’s very reliant on opening a few specific creatures that will be in high demand. Even its good blockers might not get the job done in a format full of Foretell and giants, where creatures will naturally be bigger. It also has a real glut of 4 and 5 drop plays, but not as many good early ones.
Blue might seem like it has to play a slow game as a result, but I don’t think it needs to with the right support – cards like Augury Raven and Berg Strider are really good at beating down, and commons like Bind the Monsters, Ravenform, and Run Ashore all get significantly better when you’re applying pressure. That being said, almost all its other creatures are defensively statted, so you will need to rely on your other colour to pick up the slack and give you decent offensive 2s and 3s. Still, Foretell helps a lot here – being able to land an Raven on turn 3 is a fine failcase, even if it won’t be better than curving 2 -> 3 -> Raven.
In terms of synergies, it’s going to be important to pick up at least three or four snowlands if you’re in Blue, since you need to enable your Berg Striders and Pilfering Hawks, but honestly it’s mostly specific uncommons that want you to really have loads, so many decks won’t have to worry that much beyond getting three or four (and the duals will be valuable picks anyway). Where it’ll really start to matter is in Simic, which is probably the most natural pairing for Blue anyway, since Green gives it some fantastic early plays, will simply outsize the opposing big creaures that Blue struggles with, has ramp to pair with its busted late game, and many of its own snow payoffs.
I suspect Blue will be good in any colour pair though, because it’s so deep and has such high card quality that it can support many different strategies – it’s not like you’re unhappy to play Mistwalker in a beatdown deck, even if in an ideal world, you might prefer a different 3 drop. If the format ends up faster than it looks, and the weakness to big creatures proves too costly, then Blue might suffer a bit. If not, its main weakness may simply be that it ends up overdrafted and there’s too much competition for its really good cards, so you’re left with medium playables too often…