Summon: Leviathan

Enchantment Creature — Saga Leviathan

Arctic Merfolk

Creature — Merfolk

Vodalian Mindsinger

Creature — Merfolk Wizard

Kederekt Leviathan

Creature — Leviathan

Vodalian Serpent

Creature — Serpent

Denizen of the Deep

Creature — Serpent

Whelming Wave

Sorcery

Waterspout Elemental

Creature — Elemental

Tazeem Roilmage

Creature — Merfolk Wizard

Scourge of Fleets

Creature — Kraken

Cunning Geysermage

Creature — Human Wizard

Kiora, Sovereign of the Deep

Legendary Creature — Merfolk Noble

Brinelin, the Moon Kraken

Legendary Creature — Kraken

Kiora, the Tide's Fury

Legendary Planeswalker — Kiora

Kiora's Dambreaker

Creature — Leviathan

Breaching Leviathan

Creature — Leviathan

Kiora, Master of the Depths

Legendary Planeswalker — Kiora

Risen Riptide

Creature — Elemental

Coralhelm Chronicler

Creature — Merfolk Wizard

Kenessos, Priest of Thassa

Legendary Creature — Merfolk Cleric

Serpent of Yawning Depths

Enchantment Creature — Serpent

Biblioplex Kraken

Creature — Kraken

Urborg Emissary

Creature — Human Wizard

Kiora, the Rising Tide

Legendary Creature — Merfolk Noble

Tide Shaper

Creature — Merfolk Wizard

Sliptide Serpent

Creature — Serpent

Elvish Hydromancer

Creature — Elf Wizard

Trench Behemoth

Creature — Kraken

Waker of Waves

Creature — Whale

Depth Defiler

Creature — Eldrazi

Wastescape Battlemage

Creature — Eldrazi Wizard