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An Esper mill deck centering around Phenax, God of Deception. Basic objective: Get him out, and start tapping walls. And aside from Phenax, and the land rares, it's a pretty cheap deck to make.
Get out walls that work as early defense, then use those same walls to mill your opponent out when you drop Phenax. Doorkeeper provides a little extra mill in case mana is a problem and you can't get Phenax out. And of course, since the tapping ability can work at instant speed, may as well keep the walls untapped to block until your opponent's end step (or until right before the wall is about to die or be tapped; tapping in response is a good thing).
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