Quote from ilovesaprolings »
Blue has card that put creatures on the top of the library. Blue can mill, so:
Put target creature on top of its owner's library. That player puts the first card of his library into the graveyard.
Realy maro has said that he's gonna do an article talking about every colors' weaknesses. I think the blue part will only be "blue can't deal direct damage".
Actually Blue's had Psionic Blast, Psychic Purge, and dozens of pingers for ages. I think Blue's major weakness is that every other color hates blue most of all.
Acorn Catapult is a decent card that features a good bit of versatility. Can ping tiny utility creatures dead, and can make token blockers for big scary ones, like a psuedo-Forcefield. Shows it's worth in multiplayer, where people will attack each other with squirrels just so that you'll give them more of them. It's just a problem when you've given someone three squirrels and they toss down a Skullclamp. Oops!