1 Ancient Tomb
1 Halimar Depths
29 Island
1 Minamo, School at Water's Edge
1 Nykthos, Shrine to Nyx
1 Reliquary Tower
1 Rogue's Passage
1 Temple of the False God
1 Aetherspouts
1 Aethersquall Ancient
1 Bident of Thassa
1 Breaching Leviathan
1 Caged Sun
1 Capsize
1 Coastal Piracy
1 Counterspell
1 Crush of Tentacles
1 Cryptic Command
1 Cursecatcher
1 Cyclonic Rift
1 Deep-Sea Kraken
1 Deepchannel Mentor
1 Disallow
1 Dissipate
1 Dissolve
1 Engulf the Shore
1 Evacuation
1 Extraplanar Lens
1 Fellwar Stone
1 Harbinger of the Tides
1 High Tide
1 Inkwell Leviathan
1 Into the Roil
1 Inundate
1 Kederekt Leviathan
1 Kraken Hatchling
1 Kraken of the Straits
1 Leyline of Anticipation
1 Lorthos, the Tidemaker
1 Master of Waves
1 Merfolk Trickster
1 Mind Stone
1 Mistcaller
1 Mystic Confluence
1 Mystical Tutor
1 Pact of Negation
1 Pearl Lake Ancient
1 Propaganda
1 Quest for Ula's Temple
1 Quicksilver Amulet
1 Reef Worm
1 Rhystic Study
1 Sapphire Medallion
1 Scourge of Fleets
1 Sensei's Divining Top
1 Shipbreaker Kraken
1 Sky Diamond
1 Slinn Voda, the Rising Deep
1 Sol Ring
1 Stormsurge Kraken
1 Stormtide Leviathan
1 Tempest Caller
1 Thada Adel, Acquisitor
1 Thassa, God of the Sea
1 Thassa's Rebuff
1 Thing in the Ice // Awoken Horror
1 Thought Vessel
1 Treasure Cruise
1 Tromokratis
1 True-Name Nemesis
1 Wake Thrasher
1 Whelming Wave
Sideboard:
1 Serpent of Yawning Depths