U/G Madness
An Extended deck, by Juan Luis Fernandez
1st place at a Pro Tour: Honolulu tournament in San Juan on 2005-11-13
As reported at http://www.wizards.com/default.asp?x=mtgevent/hon05ptq/1113sanjuan

Maindeck:
8 Forest
8 Island

Artifacts
2 Chrome Mox (Not currently legal in Extended)
2 Pithing Needle

Creatures
3 Aquamoeba (Not currently legal in Extended)
4 Arrogant Wurm (Not currently legal in Extended)
4 Basking Rootwalla (Not currently legal in Extended)
1 Merfolk Looter
1 Thought Courier (Not currently legal in Extended)
4 Wild Mongrel (Not currently legal in Extended)
2 Wonder (Not currently legal in Extended)

Instants
4 Circular Logic (Not currently legal in Extended)

Legendary Artifacts
3 Umezawa's Jitte (Not currently legal in Extended)

Sorceries
4 Careful Study (Not currently legal in Extended)
3 Deep Analysis (Not currently legal in Extended)
3 Roar of the Wurm (Not currently legal in Extended)

Lands
4 Yavimaya Coast

Sideboard:
2 Pithing Needle
3 Ravenous Baloth (Not currently legal in Extended)
3 Naturalize
3 Oxidize (Not currently legal in Extended)
3 Seedtime (Not currently legal in Extended)
1 Meloku the Clouded Mirror (Not currently legal in Extended)