Solid start. I would try and make room for Wardstone, Wall of Thorns, Tanglevine, Reverse Attack and maybe a way of dealing with flying creatures.
Is Wardstone a significant deterrent? An extra 2 mana seems like something most people would be willing to pay.
Funny you mention those other spells. I originally had all 3 in my book at one point, but rarely cast them. Wall of thorns occasionally (though I was more likely to get in my opponent's face and swing at them rather than take time setting up a wall push), never once cast tanglevine, and I rarely cast reverse because I would let my armor/forcefield/defense/block absorb hits.
The flying thing came up last night when I told my paladin opponent I was glad they hadn't summoned any griffins. I figured my sleeps and charm would help. But I rarely see flying things, so don't have much experience to go from.
