nice deck. I have a similar idea. http://mtgvault.com/ViewDeck.aspx?DeckID=60590 In play testing, I found that patrol signaler is REALLY vulnerable to burn and other removal. Even with a hand that contains your combo, you could lose to removal spells. It's too bad that Greater Auramancy costs so much mana. Also, without Paradise Mantles you are going to need to use Idyllic Tutor to get Utopia Vow or Training Grounds, and that costs you an entire turn. With Utopia Vow, your creatures cannot block, so you might lose to fast decks without much contest. I recommend adding stall or creature removal, such as Holy Day, Dawn Charm, Silence, or Path to Exile. Maybe add some Birds of Paradise to speed up the deck.
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This deck looks promising, but without the Amulet of Vigor it falls flat. Almost all of your lands are bounce lands, so without the Amulet the deck is too slow. I suggest adding enlightened tutors or fabricates.