Your main deck looks nice although I'm a little skeptical about a couple of things missing. My own FG killer is based on this and the the nova FG killer although I've tweaked it a bit to this slightly bigger version which seems to work fairly well. The gravity shield was a later addition but it's already saved my ass numerous times.
Haven't actually tested it with the bond in there yet but I do sometimes find myself in need of a few extra life so it can't hurt (and makes those masteries slightly easier).
4vo 52n 592 5up 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6rn 6rn 6rn 6rn 6u3 6u3 6u3 6u3 6u3 6u3 6u6 71b 71b 749 74b 74b 7am 7dl 7do 7do 7gp 7n3 7q5 7q5 7q8 80h 80h 80h
I mainly don't like your reliance on the single bone shield as I quite often find it takes a bit of a going to get the oty up with the shield at the right time. True your deck is 6 cards smaller but I dont think that'd make a lot of difference. On an unrelated note, I also find I tend to run out of time quanta (or at least use it slightly faster than I gain it) so only use hourglasses or rewinds when I really have to.
Yes, I do think I probably have too many shields in there but they've all come in handy. The bone walls buy you a turn if nothing else and I've already mentioned the virtue of the gravity shield (invaluable addition imo). The fire buckler is probably questionable but I sometimes find it useful for clearing lots of low level monsters, killing immaterial/burrowed ones or simply putting creatures in range of my otyughs.
Anyway, just thought I'd ask what you think considering you seem to know what you're doing. ^^