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a U/W merfolk creature based mill deck
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Merrow Reejerey's ability to tap or untap target permanent is insane. Just target your own land to untap it and use it again :p Silvergill Douser's "Target creature gets -X/-0" and Merfolk Thaumaturgist's "Switch target creature's power and toughness" is "I kill your creature" :p (you can even kill those annoying 'indestructible' creatures)
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My suggestions: add 4 Drowner of Secrets. Leech Bonder, Sea Scryer, Puresight Merrow can also be taken out and replaced. I think you're going for a sort of draw/form of scry with those cards, and there are better spells for that (not Merfolk, albeit), but my suggestion would be control with counterspells, not just Lullmage. Here's my deck list that is completely focused on milling in a Merfolk deck: http://www.mtgvault.com/ViewDeck.aspx?DeckID=223760 (although I love the idea of the Wanderwine Prophets and Merfolk Sovereign combo).
paradise mantle goes excellent with leech bonder or puresight merrow. lantern of insight allows you to know when to stop milling and let your opponent draw a card.