Whoa, this is a very tight deck. Control decks are dealt with because there is nothing to control, offensive decks are controlled thanks to insane healing.
I personally dislike Shards of Divinity, and I would take out some of them to add in more Imp Miracles.

but that's just a personal opinion.
How does this deck do in terms of quanta? It looks like it could use some more towers to get a faster start. The one thing that stands a chance against this deck is a Devourer deck, because you're constantly low on quanta.
Then again, a stall deck with either Bonewalls or Phase Shields could just deck this thing out. This deck, although very shielded, has no control elements of its own.
Thanks for a great deck.