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Dredge
A Legacy deck, by Drew Tunison
3rd place at a tournament in Washington, District of Columbia, United States on 2013-11-17
As reported at http://www.wizards.com/magic/magazine/article.aspx?x=mtg/daily/eventcoverage/gpwas13/welcome

Maindeck:

Artifacts
4 Lion's Eye Diamond

Creatures
1 Flame-Kin Zealot
4 Golgari Grave-Troll
3 Golgari Thug
3 Ichorid
4 Narcomoeba
4 Stinkweed Imp

Enchantments
4 Bridge from Below

Legendary Creatures
2 Griselbrand

Sorceries
4 Breakthrough
4 Cabal Therapy
4 Careful Study
3 Dread Return
4 Faithless Looting

Lands
4 Cephalid Coliseum
4 City of Brass
4 Gemstone Mine

Sideboard:
1 Ancestor's Chosen
4 Leyline of the Void
2 Chain of Vapor
1 Darkblast
2 Nature's Claim
1 Elesh Norn, Grand Cenobite
4 Gitaxian Probe (Banned in Legacy)