This weird deck gives someone Sorrow's Path with Zedruu, then taps and untaps it a bunch of times.
Many cards here tap or untap lands, or tutor for Sorrow's Path.
This deck is (obviously) kind of a one-trick pony; it has some other ways to win but they're limited. It is funny to see someone killed by it; the method of your death is quite unapparent until it happens.
Click here for a text version of this decklist
Click here for my EDH Commander decks