very nice deck, however a tad on the expensive side in mana cost. Try a Rune-Tail, Kitsune Ascendent. That would make your creatures invincible since you should be up to 30 life easily.
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instead of Visara check out Avatar of Woe from prophecy. It's cheaper because in a mill deck you will most likely have NO trouble getting 10 creatures in a graveyard and it does the same thing as visara.
looks like a good deck! The only thing I'd say is that you should NEVER have one of any card in your deck unless it gets shuffled into your library from anywhere. The chances of getting it become very slim so it becomes useless. Also the only time you should ever have 2 things in your deck is when they are legendary's so you don't get a dead card in your hand. So i'd look at the distribution of the cards and either get rid of those or commit to them more. Overall I like it though.
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instead of Abduction, check out Control Magic. Also, you should never have 1 of anything in a deck because the chances are so slim that you will actually get them, thus making them useless. Either commit to having 2 or 3 of them or let them go. Overall good deck that will mill quite well.