Iceridge Serpent

Creature — Serpent

Sliptide Serpent

Creature — Serpent

Kederekt Leviathan

Creature — Leviathan

Whelming Wave

Sorcery

Yarok's Wavecrasher

Creature — Elemental

Deep-Sea Terror

Creature — Serpent

Wormfang Behemoth

Creature — Nightmare Fish Beast

Cyclone Summoner

Creature — Giant Wizard

Bigfin Bouncer

Creature — Shark Pirate

Scourge of Fleets

Creature — Kraken

Floodtide Serpent

Creature — Serpent

Serpent of Yawning Depths

Enchantment Creature — Serpent

Slinn Voda, the Rising Deep

Legendary Creature — Leviathan

Cache Raiders

Creature — Merfolk Rogue

Benthic Anomaly

Creature — Eldrazi Serpent

Species Gorger

Creature — Frog Beast

Cephalid Constable

Creature — Octopus Wizard

Thing from the Deep

Creature — Leviathan

Man-o'-War

Creature — Jellyfish

Part the Veil

Instant — Arcane

Sidisi's Faithful

Creature — Snake Wizard

Aether Adept

Creature — Human Wizard

Deep-Sea Serpent

Creature — Serpent

Darting Merfolk

Creature — Merfolk

Sea God's Scorn

Sorcery

Invasive Species

Creature — Insect

Tolarian Serpent

Creature — Serpent

Rimekin Recluse

Creature — Elemental Wizard

Captivating Gyre

Sorcery

Profaner of the Dead

Creature — Snake Wizard

Waterwhirl

Instant