1 Command Tower
1 Coral Atoll
1 Halimar Depths
33 Island
1 Reliquary Tower
1 Rogue's Passage
1 Temple of the False God
1 Aetherize
1 Aetherspouts
1 As Foretold
1 Azor's Gateway // Sanctum of the Sun
1 Blue Sun's Zenith
1 Breaching Leviathan
1 Burnished Hart
1 Caged Sun
1 Chasm Skulker
1 Colossal Whale
1 Commander's Sphere
1 Counterspell
1 Crush of Tentacles
1 Cryptic Serpent
1 Deep-Sea Kraken
1 Deepchannel Mentor
1 Devastation Tide
1 Dreamstone Hedron
1 Endless Atlas
1 Engulf the Shore
1 Evacuation
1 Flow of Ideas
1 Ghirapur Orrery
1 Harbinger of the Tides
1 Hedron Archive
1 High Tide
1 Inkwell Leviathan
1 Kederekt Leviathan
1 Kraken of the Straits
1 Lorthos, the Tidemaker
1 Master of Waves
1 Merfolk Wayfinder
1 Oracle's Vault
1 Overwhelming Intellect
1 Polymorphist's Jest
1 Quest for Ula's Temple
1 Reef Worm
1 Rush of Knowledge
1 Scattering Stroke
1 Scourge of Fleets
1 Sea Scryer
1 Sealock Monster
1 Serpent of the Endless Sea
1 Shipbreaker Kraken
1 Slinn Voda, the Rising Deep
1 Sol Ring
1 Solemn Simulacrum
1 Spell Swindle
1 Spreading Seas
1 Stormsurge Kraken
1 Swiftfoot Boots
1 Tempest Caller
1 Thassa's Rebuff
1 Thing in the Ice // Awoken Horror
1 Thought Vessel
1 Thran Dynamo
1 Tromokratis
1 Ugin's Insight
1 Wake Thrasher
1 Whelming Wave
1 Wonder
1 Worn Powerstone
Sideboard:
1 Cold-Eyed Selkie
1 Dreamscape Artist
1 Merfolk Sovereign