1 Coral Atoll
1 Halimar Depths
30 Island
1 Nykthos, Shrine to Nyx
1 Opal Palace
1 Reliquary Tower
1 Rogue's Passage
1 Sand Silos
1 Saprazzan Cove
1 Skyline Cascade
1 Soaring Seacliff
1 Tolaria
1 Aethersquall Ancient
1 Amoeboid Changeling
1 Benthic Behemoth
1 Bident of Thassa
1 Body Double
1 Breaching Leviathan
1 Caged Sun
1 Clone
1 Clone Shell
1 Counterspell
1 Cryptic Serpent
1 Cryptoplasm
1 Darksteel Ingot
1 Deep-Sea Kraken
1 Disallow
1 Dissipate
1 Dissolve
1 Elixir of Immortality
1 Exclude
1 Gearseeker Serpent
1 Harbor Serpent
1 Identity Thief
1 Inkwell Leviathan
1 Kefnet's Monument
1 Kraken Hatchling
1 Kraken of the Straits
1 Library of Leng
1 Lorthos, the Tidemaker
1 Lotus Bloom
1 Mercurial Pretender
1 Mox Amber
1 Nullify
1 Oracle's Vault
1 Parallel Thoughts
1 Phyrexian Metamorph
1 Quest for Ula's Temple
1 Quicksilver Gargantuan
1 Rhystic Study
1 Ring of Three Wishes
1 Riptide Shapeshifter
1 Scrapdiver Serpent
1 Sealock Monster
1 Segovian Leviathan
1 Shape Stealer
1 Shapesharer
1 Shipbreaker Kraken
1 Sky Diamond
1 Slinn Voda, the Rising Deep
1 Sol Ring
1 Spell Crumple
1 Spire Serpent
1 Stoic Rebuttal
1 Stormsurge Kraken
1 Stormtide Leviathan
1 Thought Vessel
1 Tromokratis
1 Vesuvan Doppelganger
1 Vizier of Many Faces
1 Whelming Wave
Sideboard:
1 Aetherling
1 Aquamorph Entity
1 Avian Changeling
1 Basalt Monolith
1 Battlegate Mimic
1 Blades of Velis Vel
1 Bog Serpent
1 Cairn Wanderer
1 Cancel
1 Cavern of Souls
1 Cemetery Puca
1 Chameleon Colossus
1 Changeling Berserker
1 Changeling Hero
1 Changeling Sentinel
1 Changeling Titan
1 Crag Puca
1 Crib Swap
1 Deep-Sea Serpent
1 Deep-Sea Terror
1 Denizen of the Deep
1 Deprive
1 Dimir Doppelganger
1 Dirgur Nemesis
1 Disappearing Act
1 Dreamwinder
1 Ego Erasure
1 Evil Twin
1 Familiar's Ruse
1 Fire-Belly Changeling
1 Floodtide Serpent
1 Flowstone Sculpture
1 Game-Trail Changeling
1 Gemstone Array
1 Ghostly Changeling
1 Isleback Spawn
1 Jodah's Avenger
1 Jokulmorder
1 Leviathan
1 Lightning Serpent
1 Mage-Ring Network
1 Marjhan
1 Mind Stone
1 Mirror Entity
1 Moonglove Changeling
1 Mothdust Changeling
1 Nameless Inversion
1 Negate
1 Nemesis of Reason
1 Nightsky Mimic
1 Nimbus Swimmer
1 Polar Kraken
1 Primal Clay
1 Primal Plasma
1 Progenitor Mimic
1 River Serpent
1 Riverfall Mimic
1 Ronom Serpent
1 Sea Monster
1 Sea Serpent
1 Serpent of the Endless Sea
1 Shapeshifter
1 Shapeshifter's Marrow
1 Shields of Velis Vel
1 Shorecrasher Mimic
1 Simic Sky Swallower
1 Skeletal Changeling
1 Sky Swallower
1 Slinking Serpent
1 Slipstream Serpent
1 Springleaf Drum
1 Steelclad Serpent
1 Temple of the False God
1 Thornling
1 Torchling
1 Trench Gorger
1 Turtleshell Changeling
1 Urza's Avenger
1 Urza's Mine
1 Urza's Power Plant
1 Urza's Tower
1 Volrath the Fallen
1 War-Spike Changeling
1 Wings of Velis Vel
1 Wizard's Retort
1 Woodland Changeling
1 Woodlurker Mimic
1 Wrexial, the Risen Deep