Suggestions for my Blue/Black Mill Deck: Magic the Gathering?

Don't forget about Blue Sun's Zenith! I can target your opponents too! Also Sea Gate Oracle is pretty good for mucking up the ground while smoothing out your draws. That makes it better than wall of frost IMO. He's a heck of a lot easier to cast on turn 3 since he only requires one blue. Sure, wall of frost blocks titans. But isnt that what you have permission and Go for the Throat for? Be careful will all those lands that come into play tapped. They can keep from countering an important spell early. Try to work in as many basics as you can.