Hi guys, I've been lurking around here for quite some time now and this will be my virgin post :D
I'd love your opinions on my deck and will most definitely welcome suggestions on how to improve on it.

http://deckbox.org/sets/137953

Thanks

From a deck design perspective, the Phyrexian Obliterators have to go or the deck needs to lean way more towards black than white. They are an amazing card but this deck does not have the right mana-base to cast it on turn 4 consistently.

Also, Shattered Angel is worse than Serra Angel in this deck. You probably don't need the life gain and with her 4 toughness and vigilance she is sure to scare off whatever creatures are left to attack after Gideon's Lawkeeper, Sheoldred, Whispering One, Norn's Annex, Pacifism and Arrest.