The OP is outdated...so recommending this deck here!
(Fully upgraded is better, obviously)
I used an unupped version of this and beat Osiris without breaking a sweat. First turn Lobo was the key! I got an upped Pharaoh in the spin, too.
For the record, I used one Elite Phase Dragon, just because I had it. I realize your deck has all unupped Phase Dragons, and I understand the reason is because of cost. The Elites don't provide enough extra benefit in this deck to justify the extra
. Since it was the only upped version I had of any of the cards in your deck, though, I said, "What the hell?"