I really love this deck. I am a very defensive player, so it's cool o see a defensive deck that isn't just a bunch of defenders. I'm curious though, why is Unstable Mutation in here? Do you use it on your creature or your oppennits?

Thanks for the props! Oh, always on mine! By the time it actually hurts you with that first -1, its done +3, +2, +1 across the 3 turns. Its not broken, but on unblockables "+6" is good for 1 mana. No Upvote? :<

The more I play this, the more I love Creeping Tar Pit, especially since I usually have mana to spare. He's a surprise blocker, is basically an ability that says 4 mana = 3 damage, and Phantasmal Image can interestingly turn to a 3/2 unblockable.

I gave it an , up vote. :) Like I said, I love defender decks. You should check out mine The Best Offense is a Good Defense

If you get the money: Baleful Strix

It looks good! I really like the Duskmantle, it's like dark confidant but for all! Maybe you could add in some Countersquall (CMC:BU)?