Merfolk
A Modern deck, by Garrett Bishop
3rd place at a tournament in Dallas, Texas, United States on 2016-11-20
As reported at www.starcitygames.com

Maindeck:

Artifacts
4 Aether Vial

Creatures
4 Cursecatcher
3 Harbinger of the Tides
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

Enchantments
4 Spreading Seas

Instants
2 Dismember
4 Vapor Snag

Basic Lands
12 Island

Lands
4 Cavern of Souls
4 Mutavault

Sideboard:
2 Relic of Progenitus
1 Spellskite
2 Tidebinder Mage
1 Dispel
3 Hurkyl's Recall
2 Spell Pierce
2 Surgical Extraction
2 Kira, Great Glass-Spinner