The first thing you should do is find a way to make the deck 60 cards. If this is "tournament quality" then it needs to be 60 cards otherwise you'll draw the cards you need less than you want. Your creatures seem fine. Have you considered Burn at the Stake for this deck? Its one of the best finishers this kind of deck has (Its won many games for my own red/white human deck).
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Emrakul, Ulamog and Kozilek. In fact i think all the Eldrazi have cool artwork.