1 Coral Atoll
1 Halimar Depths
31 Island
1 Mystic Sanctuary
1 Reliquary Tower
1 Terrain Generator
1 Aethersquall Ancient
1 Aquitect's Will
1 Archaeomancer
1 Bident of Thassa
1 Brainstorm
1 Breaching Leviathan
1 Chasm Skulker
1 Claustrophobia
1 Clinging Anemones
1 Colossal Whale
1 Counterspell
1 Deep-Sea Kraken
1 Deepfathom Skulker
1 Displacement Wave
1 Dissipate
1 Encrust
1 Flow of Ideas
1 Fog Bank
1 Giant Oyster
1 Guard Gomazoa
1 Ichthyomorphosis
1 Imprisoned in the Moon
1 Index
1 Inkwell Leviathan
1 Inundate
1 Jalira, Master Polymorphist
1 Kiora Bests the Sea God
1 Kiora's Dismissal
1 Kraken Hatchling
1 Kraken of the Straits
1 Lingering Mirage
1 Lorthos, the Tidemaker
1 Man-o'-War
1 Merfolk Looter
1 Merfolk Wayfinder
1 Nadir Kraken
1 Omen
1 Polymorphist's Jest
1 Ponder
1 Portent
1 Preordain
1 Quest for Ula's Temple
1 Reef Worm
1 Rite of Replication
1 Sapphire Medallion
1 Scourge of Fleets
1 Sigiled Starfish
1 Slinn Voda, the Rising Deep
1 Sol Ring
1 Soul-Guide Lantern
1 Spreading Seas
1 Stormsurge Kraken
1 Stormtide Leviathan
1 Swiftfoot Boots
1 Sword of the Animist
1 Talrand, Sky Summoner
1 Thada Adel, Acquisitor
1 Thassa, Deep-Dwelling
1 Thassa's Emissary
1 Thassa's Rebuff
1 Thought Sponge
1 Thought Vessel
1 Whelming Wave
Sideboard:
1 Aetherize
1 Alluring Siren
1 Annul
1 Anticipate
1 Archetype of Imagination
1 Cackling Counterpart
1 Cloaked Siren
1 Commander's Sphere
1 Dimir Signet
1 Dissolve
1 Dulcet Sirens
1 Guard Gomazoa
1 Hedron Crab
1 Hypnotic Siren
1 Iceberg
1 Master of the Pearl Trident
1 Merfolk Thaumaturgist
1 Metallurgic Summonings
1 Renegade Map
1 Retraced Image
1 Rogue's Passage
1 Saheeli's Artistry
1 Sea's Claim
1 Serpent of the Endless Sea
1 Shipbreaker Kraken
1 Sygg, River Cutthroat
1 Thassa, God of the Sea
1 Unsummon