I am working on a Blackwing deck for the march 2011 format and need some feedback.?

your deck is pretty solid, i like it. id say run an enemy controller or two just to criple your opponent even more, such as stealing their tuner right before a big move. it doesnt run the risk of getting trap stunned like your Ic Attack. And smashing would really be just as good as a fissure bc im sure your deck can rid the field of any monsters left after smashing. Other than that good stuff