Merfolk
A Modern deck, by Karen Spofford
5th place at a tournament in Littleton, Colorado, United States on 2014-09-27
As reported at www.starcitygames.com

Maindeck:

Artifacts
4 Aether Vial

Creatures
4 Cursecatcher
4 Lord of Atlantis (Not currently legal in Modern)
4 Master of the Pearl Trident
3 Master of Waves
3 Merrow Reejerey
4 Phantasmal Image
4 Silvergill Adept

Enchantments
4 Spreading Seas

Instants
4 Vapor Snag

Legendary Creatures
1 Kira, Great Glass-Spinner

Legendary Enchantment Creatures
1 Thassa, God of the Sea

Basic Lands
13 Island

Lands
4 Cavern of Souls
3 Mutavault

Sideboard:
2 Torpor Orb
3 Tidebinder Mage
1 Dismember
2 Echoing Truth
3 Hurkyl's Recall
3 Spell Pierce
1 Kira, Great Glass-Spinner