12 Island
6 Plains
4 Terramorphic Expanse
4 Coralhelm Commander
2 Drowner of Secrets
4 Enclave Cryptologist
2 Essence Scatter
1 Harbor Serpent
2 Harpoon Sniper
1 Inkwell Leviathan
3 Judge of Currents
1 Lorthos, the Tidemaker
1 Lullmage Mentor
3 Merfolk Sovereign
2 Merrow Commerce
2 Merrow Reejerey
4 Redirect
2 Stonybrook Schoolmaster
2 Vapor Snag
2 Veteran of the Depths
Sideboard:
1 Aquitect's Will
1 Benthicore
1 Caller of Gales
1 Cosi's Trickster
1 Dispel
1 Frostwind Invoker
1 Halimar Wavewatch
1 Merfolk Looter
1 Merfolk Seastalkers
1 Merfolk Spy
1 Merrow Harbinger
1 Sejiri Merfolk
1 Skywatcher Adept
1 Stonybrook Banneret
1 Stormtide Leviathan
1 Streambed Aquitects
1 Sygg, River Guide
1 Thada Adel, Acquisitor
1 Twincast
1 Wanderwine Hub
1 Wanderwine Prophets
1 Wellgabber Apothecary