1 Benthic Behemoth
1 Bog Serpent
1 Breaching Leviathan
1 Deep-Sea Kraken
1 Deep-Sea Serpent
1 Denizen of the Deep
1 Dreamwinder
1 Eater of Days
1 Floodtide Serpent
1 Giant Octopus
1 Grozoth
1 Harbor Serpent
1 Inkwell Leviathan
1 Isleback Spawn
1 Jokulmorder
1 Kederekt Leviathan
1 Kiora, the Crashing Wave
1 Kraken Hatchling
1 Kraken of the Straits
1 Kukemssa Serpent
1 Leviathan
1 Lightning Serpent
1 Lorthos, the Tidemaker
1 Marjhan
1 Nemesis of Reason
1 Nimbus Swimmer
1 Pearl Lake Ancient
1 Polar Kraken
1 Quest for Ula's Temple
1 Reef Worm
1 Ronom Serpent
1 Sandbar Serpent
1 Scrapdiver Serpent
1 Sea Monster
1 Sea Serpent
1 Sealock Monster
1 Segovian Leviathan
1 Serpent of the Endless Sea
1 Shipbreaker Kraken
1 Shoal Serpent
1 Shrouded Serpent
1 Simic Sky Swallower
1 Sky Swallower
1 Slinking Serpent
1 Slipstream Serpent
1 Sliptide Serpent
1 Spire Serpent
1 Steelclad Serpent
1 Stormsurge Kraken
1 Stormtide Leviathan
1 Taniwha
1 Thing from the Deep
1 Tidal Kraken
1 Tolarian Serpent
1 Trench Gorger
1 Tromokratis
1 Veiled Serpent
1 Vodalian Serpent
1 Whelming Wave
1 Wrexial, the Risen Deep
Sideboard: