Dredge
An Extended deck, by Alex Smith
1st place at a PT: San Juan PTQ Season tournament in Denver, Colorado, United States on 2010-02-28
As reported at http://www.wizards.com/magic/magazine/events.aspx?x=mtg/daily/eventcoverage/sanjuan10ptq/0227denver

Maindeck:

Creatures
3 Bloodghast
4 Drowned Rusalka (Not currently legal in Extended)
1 Flame-Kin Zealot (Not currently legal in Extended)
4 Golgari Grave-Troll (Not currently legal in Extended)
4 Hedron Crab
4 Narcomoeba (Not currently legal in Extended)
2 Sphinx of Lost Truths
4 Stinkweed Imp (Not currently legal in Extended)

Enchantments
4 Bridge from Below (Not currently legal in Extended)

Sorceries
3 Dread Return (Not currently legal in Extended)
4 Glimpse the Unthinkable (Not currently legal in Extended)
3 Ideas Unbound (Not currently legal in Extended)
1 Life from the Loam (Not currently legal in Extended)

Basic Lands
2 Island

Lands
2 Breeding Pool
1 Dakmor Salvage (Not currently legal in Extended)
4 Misty Rainforest
3 Scalding Tarn
3 Verdant Catacombs
3 Watery Grave

Land Creatures
1 Dryad Arbor (Not currently legal in Extended)

Sideboard:
4 Leyline of the Void
3 Darkblast (Not currently legal in Extended)
3 Echoing Truth (Not currently legal in Extended)
4 Nature's Claim
1 Iona, Shield of Emeria