http://www.magicdeckvortex.com/DDB/riftleveler.htm

Description of deck by its author
(quoted):



...My second instinct was to pair Riftsweeper
with some old friends from Mirrodin block: Leveler and Beacon of
Tomorrows. The Leveler removes your entire library from the game when it
comes into play, which is conveniently where Riftsweeper wants it to be.
With your whole library in the RFG Zone, you can use Riftsweeper to
cherry-pick your Beacon of Tomorrows and have it shuffled back into your
now one-card library. Draw your card for the turn. It's a Beacon of
Tomorrows! Play it, shuffle it back in, take an extra turn, then do it
all over again. If a Leveler and infinite turns won't win you the
game—imagine your opponent has a Platinum Angel, for instance—bounce
Riftsweeper with either Wirewood Symbiote or Cloudstone Curio, replay
it, and shuffle an RFG'd Viridian Zealot or Shaman into your deck.