I tried using it, and the only way it 'works' in the deck, is to remove a couple expeditions, or explosive vegetations, but i'd prefer the mana, then the destroying creature aspect.
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I'd think about adding a couple of Echo Mages.. copy each sorcery / instant you play for two mana.. sounds good to me :p and maybe a distortion strike. make it unblockable once your able to do massive damage
I might consider a whispersilk cloak, to use quillspike to deal direct damage. I made a simalar deck (using trhe whole quill / devoted druid comb :p) but i took a completely different root then you did. Check it out : http://www.mtgvault.com/ViewDeck.aspx?DeckID=66564