Treehouse Doran
An Extended deck, by Brad Nelson
2nd place at a tournament in Amsterdam, Netherlands on 2010-09-05
As reported at http://www.wizards.com/Magic/Magazine/Article.aspx?x=mtg/daily/eventcoverage/ptams10/top8decks

Maindeck:

Creatures
3 Knight of the Reliquary (Not currently legal in Extended)
4 Loam Lion
4 Putrid Leech (Not currently legal in Extended)
4 Tarmogoyf (Not currently legal in Extended)
4 Treefolk Harbinger (Not currently legal in Extended)

Instants
1 Slaughter Pact (Not currently legal in Extended)

Legendary Creatures
4 Doran, the Siege Tower (Not currently legal in Extended)

Legendary Planeswalkers
1 Elspeth, Knight-Errant (Not currently legal in Extended)

Sorceries
4 Duress
3 Maelstrom Pulse (Not currently legal in Extended)
4 Thoughtseize (Not currently legal in Extended)

Tribal Instants
1 Nameless Inversion (Not currently legal in Extended)

Basic Lands
3 Forest
1 Swamp

Lands
4 Misty Rainforest
4 Murmuring Bosk (Not currently legal in Extended)
3 Reflecting Pool (Not currently legal in Extended)
3 Treetop Village (Not currently legal in Extended)
1 Twilight Mire (Not currently legal in Extended)
4 Verdant Catacombs

Sideboard:
2 Kitchen Finks (Not currently legal in Extended)
2 Reveillark (Not currently legal in Extended)
3 Leyline of the Void
2 Rule of Law (Not currently legal in Extended)
1 Slaughter Pact (Not currently legal in Extended)
1 Elspeth, Knight-Errant (Not currently legal in Extended)
2 Infest (Not currently legal in Extended)
1 Crib Swap (Not currently legal in Extended)
1 Bojuka Bog