1 Aesi, Tyrant of Gyre Strait
1 Arixmethes, Slumbering Isle
1 Breaching Leviathan
1 Brinelin, the Moon Kraken
1 Colossal Whale
1 Crush of Tentacles
1 Deep-Sea Kraken
1 Elder Deep-Fiend
1 Engulf the Shore
1 Floodtide Serpent
1 Giant Octopus
1 Godhunter Octopus
1 Growth Spiral
1 Gyruda, Doom of Depths
1 Inkwell Leviathan
1 Kederekt Leviathan
1 Kiora Bests the Sea God
1 Kiora, the Crashing Wave
1 Kraken of the Straits
1 Kukemssa Serpent
1 Lochmere Serpent
1 Lorthos, the Tidemaker
1 Mana Drain
1 Mesmerizing Benthid
1 Mystic Remora
1 Nadir Kraken
1 Nezahal, Primal Tide
1 Nimbus Swimmer
1 Octopus Umbra
1 Ominous Seas
1 Pearl Lake Ancient
1 Plasm Capture
1 Polar Kraken
1 Pursued Whale
1 Pygmy Hippo
1 Quest for Ula's Temple
1 Reef Worm
1 River Serpent
1 Ronom Serpent
1 Scourge of Fleets
1 Scrapdiver Serpent
1 Sea Serpent
1 Sea-Dasher Octopus
1 Serpent of the Endless Sea
1 Serpent of Yawning Depths
1 Sharktocrab
1 Shipbreaker Kraken
1 Shoal Serpent
1 Shrouded Serpent
1 Simic Sky Swallower
1 Slinn Voda, the Rising Deep
1 Slipstream Serpent
1 Sliptide Serpent
1 Startling Development
1 Stormsurge Kraken
1 Stormtide Leviathan
1 Tidal Kraken
1 Trench Behemoth
1 Tromokratis
1 Veiled Serpent
1 Vodalian Serpent
1 Voidslime
1 Whelming Wave
1 Wrexial, the Risen Deep
Sideboard:
1 Deep-Sea Serpent
1 Frilled Sea Serpent
1 Gearseeker Serpent
1 Harbor Serpent
1 Leviathan
1 Spire Serpent
1 Steelclad Serpent