Look into adding some black into the deck, Gatecrash came with some good stuff for Mill decks (Consuming Aberration & Mind Grind are really overpowered in my opinion for Mill decks) and if you don't mind spending some money on the Deck, i would suggest at least 2x Snapcaster Mage ( Wouldn't hurt to use Mind Sculpt or anything else again )... And even though some people would disagree with me but i would put more Dream Twist... And for Standard i think your good with thous 2 Planeswalkers, its that or play with 2x Jace, Memory Adept.
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