1 Arcane Lighthouse
1 Coral Atoll
1 Halimar Depths
32 Island
1 Lonely Sandbar
1 Remote Isle
1 Benthic Behemoth
1 Bident of Thassa
1 Breaching Leviathan
1 Breaking Wave
1 Brine Elemental
1 Brine Seer
1 Caged Sun
1 Capsize
1 Cephalid Looter
1 Chasm Skulker
1 Chromeshell Crab
1 Colossal Whale
1 Crush of Tentacles
1 Cyclonic Rift
1 Deep-Sea Kraken
1 Deepchannel Mentor
1 Devastation Tide
1 Displacement Wave
1 Draining Whelk
1 Engulf the Shore
1 Flow of Ideas
1 Giant Oyster
1 Gilded Lotus
1 Glaring Spotlight
1 Guard Gomazoa
1 High Seas
1 High Tide
1 Inkwell Leviathan
1 Into the Roil
1 Inundate
1 Kederekt Leviathan
1 Kraken of the Straits
1 Lorthos, the Tidemaker
1 Marjhan
1 Mysteries of the Deep
1 Mystic Remora
1 Pull from the Deep
1 Quest for Ula's Temple
1 Quicksilver Amulet
1 Quicksilver Fountain
1 Reef Worm
1 Research the Deep
1 Rush of Knowledge
1 Sand Squid
1 Sapphire Medallion
1 Scattering Stroke
1 Scourge of Fleets
1 Sea God's Revenge
1 Sea Scryer
1 Sea's Claim
1 Seasinger
1 Shipbreaker Kraken
1 Sol Ring
1 Spiny Starfish
1 Spreading Seas
1 Stormtide Leviathan
1 Thassa, God of the Sea
1 Thran Dynamo
1 Tidal Force
1 Tromokratis
1 Wash Out
1 Whelming Wave
1 Worn Powerstone
Sideboard:
1 Breaching Hippocamp
1 Brine Hag
1 Call to Mind
1 Cephalid Broker
1 Denizen of the Deep
1 Dimir Signet
1 Distorting Wake
1 Giant Shark
1 Gomazoa
1 Great Whale
1 Grozoth
1 Gulf Squid
1 Harbor Serpent
1 Hedron Crab
1 King Crab
1 Kraken Hatchling
1 Kraken's Eye
1 Man-o'-War
1 Master of Waves
1 Memory Erosion
1 Mindcrank
1 Mulldrifter
1 Nemesis of Reason
1 Pearl Lake Ancient
1 Polymorphist's Jest
1 Reef Shaman
1 Riptide Shapeshifter
1 Rite of Replication
1 River's Grasp
1 Sandals of Abdallah
1 Sealock Monster
1 Serpent of the Endless Sea
1 Sigiled Starfish
1 Stormsurge Kraken
1 Talisman of Dominance
1 Thassa's Emissary
1 Tidal Control
1 Tidal Kraken
1 Turn to Frog
1 Warped Devotion
1 Wayfarer's Bauble
1 Wrexial, the Risen Deep