Dredge
An Extended deck, by Lamppost
3rd place at a PT: San Juan PTQ Season tournament in Magic Online, United States on 2010-02-14
As reported at http://www.wizards.com/Magic/Digital/MagicOnlineTourn.aspx?x=mtg/digital/magiconline/tourn/947048

Maindeck:
2 Island

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

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

Legendary Creatures
2 Iona, Shield of Emeria

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)

Lands
2 Breeding Pool
4 Misty Rainforest
1 Overgrown Tomb
2 Scalding Tarn
1 Steam Vents
3 Verdant Catacombs
3 Watery Grave

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

Sideboard:
1 Ancestor's Chosen (Not currently legal in Extended)
3 Ancient Grudge
3 Darkblast (Not currently legal in Extended)
3 Echoing Truth (Not currently legal in Extended)
1 Life from the Loam (Not currently legal in Extended)
4 Thoughtseize (Not currently legal in Extended)