R/G Scapeshift
An Extended deck, by Christian Valenti
4th place at a tournament in Atlanta, United States on 2011-01-23
As reported at http://www.wizards.com/magic/magazine/article.aspx?x=mtg/daily/eventcoverage/gpatl11/welcome

Maindeck:

Creatures
1 Avenger of Zendikar
4 Primeval Titan

Enchantments
4 Khalni Heart Expedition
1 Prismatic Omen (Not currently legal in Extended)

Instants
3 Harrow
3 Lightning Bolt
2 Volcanic Fallout (Not currently legal in Extended)

Sorceries
2 Cultivate
4 Explore
2 Primal Command (Not currently legal in Extended)
4 Rampant Growth
3 Scapeshift (Not currently legal in Extended)

Basic Lands
6 Forest
11 Mountain

Lands
3 Evolving Wilds
3 Terramorphic Expanse
4 Valakut, the Molten Pinnacle

Sideboard:
4 Obstinate Baloth
2 Spellbreaker Behemoth (Not currently legal in Extended)
1 Prismatic Omen (Not currently legal in Extended)
4 Guttural Response (Not currently legal in Extended)
2 Volcanic Fallout (Not currently legal in Extended)
1 Primal Command (Not currently legal in Extended)
1 Scapeshift (Not currently legal in Extended)