Merfolk
A Standard deck, by Geoffrey Kirsch
1st place at a Nationals 2008 tournament in Boston, Massachusetts, United States on 2008-06-08
As reported at http://www.wizards.com/default.asp?x=mtgevent/regionals08/boston

Maindeck:

Creatures
4 Cursecatcher (Not currently legal in Standard)
4 Lord of Atlantis (Not currently legal in Standard)
4 Merrow Reejerey (Not currently legal in Standard)
4 Silvergill Adept (Not currently legal in Standard)
1 Sower of Temptation (Not currently legal in Standard)
4 Stonybrook Banneret (Not currently legal in Standard)

Instants
4 Cryptic Command (Not currently legal in Standard)

Legendary Creatures
2 Sygg, River Guide (Not currently legal in Standard)
2 Venser, Shaper Savant (Not currently legal in Standard)

Sorceries
3 Ancestral Vision (Not currently legal in Standard)

Tribal Instants
3 Sage's Dousing (Not currently legal in Standard)

Tribal Sorceries
2 Aquitect's Will (Not currently legal in Standard)

Basic Lands
11 Island

Lands
4 Adarkar Wastes (Not currently legal in Standard)
4 Mutavault (Not currently legal in Standard)
4 Wanderwine Hub (Not currently legal in Standard)

Sideboard:
2 Razormane Masticore (Not currently legal in Standard)
4 Burrenton Forge-Tender (Not currently legal in Standard)
2 Reveillark (Not currently legal in Standard)
1 Sower of Temptation (Not currently legal in Standard)
2 Flashfreeze (Not currently legal in Standard)
2 Teferi, Mage of Zhalfir (Not currently legal in Standard)
2 Sunlance (Not currently legal in Standard)