1 Aethersquall Ancient
1 Arixmethes, Slumbering Isle
1 Benthic Behemoth
1 Bog Serpent
1 Breaching Leviathan
1 Crafty Octopus
1 Crush of Tentacles
1 Cryptic Serpent
1 Deep-Sea Kraken
1 Deep-Sea Serpent
1 Deep-Sea Terror
1 Denizen of the Deep
1 Dirgur Nemesis
1 Dreamwinder
1 Eater of Days
1 Elder Deep-Fiend
1 Floodtide Serpent
1 Frilled Sea Serpent
1 Gearseeker Serpent
1 Giant Octopus
1 Godhunter Octopus
1 Grozoth
1 Harbor Serpent
1 Inkwell Leviathan
1 Isleback Spawn
1 Jokulmorder
1 Kederekt Leviathan
1 Kiora Bests the Sea God
1 Kiora, Behemoth Beckoner
1 Kiora, Master of the Depths
1 Kiora, the Crashing Wave
1 Kiora's Dambreaker
1 Kraken Hatchling
1 Kraken of the Straits
1 Kukemssa Serpent
1 Leviathan
1 Lightning Serpent
1 Lochmere Serpent
1 Lorthos, the Tidemaker
1 Marjhan
1 Mesmerizing Benthid
1 Nadir Kraken
1 Nemesis of Reason
1 Nimbus Swimmer
1 Octoprophet
1 Pearl Lake Ancient
1 Polar Kraken
1 Quest for Ula's Temple
1 Reef Worm
1 River Serpent
1 Ronom Serpent
1 Sandbar Serpent
1 Scourge of Fleets
1 Scrapdiver Serpent
1 Sea Monster
1 Sea Serpent
1 Sealock Monster
1 Segovian Leviathan
1 Serpent of the Endless Sea
1 Serpent of Yawning Depths
1 Sharktocrab
1 Shipbreaker Kraken
1 Shoal Kraken
1 Shoal Serpent
1 Shrouded Serpent
1 Simic Sky Swallower
1 Sky Swallower
1 Slinking Serpent
1 Slinn Voda, the Rising Deep
1 Slipstream Serpent
1 Sliptide Serpent
1 Spire Serpent
1 Steelclad Serpent
1 Stormsurge Kraken
1 Stormtide Leviathan
1 Thing from the Deep
1 Thing in the Ice // Awoken Horror
1 Tidal Kraken
1 Trench Gorger
1 Tromokratis
1 Whelming Wave
1 Wrexial, the Risen Deep
Sideboard: