Death air? now thats pretty darn creative! I'd focus that deck down to what its best at: huge bonewalls/vultures due to cc mixed with poison. Try and get a few pendulums in there, drop the dragon, mummies, skull shield and dragonfly in favor of more poison, bonewalls, and CC cards. If you had another owls eye or two, id drop the bone pillars completely in favor of a death mark and just use soul catchers.
I see a lot of potential in you, you are definately a wonderful addition around here.