Merfolk
A Modern deck, by Tom Caldwell
8th place at a tournament in Cayce, South Carolina, United States on 2015-09-06
As reported at www.starcitygames.com

Maindeck:
13 Island

Artifacts
4 Aether Vial

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

Enchantments
4 Spreading Seas

Instants
1 Dismember

Legendary Enchantment Creatures
1 Thassa, God of the Sea

Lands
3 Cavern of Souls
4 Mutavault

Sideboard:
1 Relic of Progenitus
1 Tidebinder Mage
2 Gut Shot
2 Hibernation
1 Mana Leak
2 Spell Pierce
2 Spell Snare
1 Unified Will
1 Vapor Snag
2 Kira, Great Glass-Spinner