This is a work in progress. The idea here is to wipe the board, play Avacyn, then wipe the board again as necessary.
Currently, I think I went too far with the boardwipes, and the deck needs threats. (With more threats and less boardwipes than what I show here, hopefully this deck won't be too obnoxious to play against.)
Artifact/creature mana ramp won't survive, so I'm running as much land search as I can in mono-White.
Click here for a text version of this decklist
Click here for my EDH Commander decks