Dredge
Featured by Cedric Phillips on 2010-02-14 (Extended)
As written about in http://www.starcitygames.com/magic/extended/18769_Constructed_Criticism_Grinding_The_Gauntlet_Five_Decks_For_The_Grand_Prix.html

Maindeck:

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)

Basic Lands
2 Island

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)