Please comment on my blackwing deck?

It seems that you added to many copies of the same cards. Try narrowing them down to 2 or 1. Also, try to stick closer to the 40 card minimum. Having too many copies will take up space in your hand rather than having useful cards to work with. You should also add a Pot Of Avarice just in case. Last, at 1500, My Body As A SHield is not worth it at all.