Mono-Blue Merfolk
Featured by Matt Higgs on 2017-09-21 (Standard)

Maindeck:

Artifacts
1 Dowsing Dagger (Not currently legal in Standard)

Artifact Creatures
4 Metallic Mimic (Not currently legal in Standard)
4 Ornithopter (Not currently legal in Standard)

Creatures
4 River Sneak (Not currently legal in Standard)
2 Tempest Caller (Not currently legal in Standard)

Enchantments
2 Arcane Adaptation (Not currently legal in Standard)
2 Deeproot Waters (Not currently legal in Standard)

Instants
4 Opt (Not currently legal in Standard)
4 Perilous Voyage (Not currently legal in Standard)

Legendary Artifacts
2 Kefnet's Monument (Not currently legal in Standard)

Legendary Artifact Creatures
4 Hope of Ghirapur (Not currently legal in Standard)

Legendary Creatures
1 Kopala, Warden of Waves (Not currently legal in Standard)

Sorceries
4 Chart a Course (Not currently legal in Standard)
2 Reverse Engineer (Not currently legal in Standard)

Basic Lands
14 Island

Lands
4 Desert of the Mindful (Not currently legal in Standard)
2 Field of Ruin