Merfolk
A Modern deck, by Jennifer Long
14th place at a tournament in Atlanta, Georgia, United States on 2016-06-05

Maindeck:
10 Island

Artifacts
4 Aether Vial

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

Enchantments
4 Spreading Seas

Instants
3 Dismember
2 Spell Pierce

Legendary Creatures
2 Kira, Great Glass-Spinner

Lands
2 Cavern of Souls
4 Mutavault
2 Wanderwine Hub

Legendary Lands
1 Minamo, School at Water's Edge
1 Oboro, Palace in the Clouds

Sideboard:
3 Chalice of the Void
2 Relic of Progenitus
2 Gut Shot
3 Hurkyl's Recall
2 Negate
3 Tectonic Edge