Sea Hag // Aquatic Ingress

Creature — Hag // Instant — Adventure

Vantress Transmuter // Croaking Curse

Creature — Human Wizard // Sorcery — Adventure

Reaper of Night // Harvest Fear

Creature — Specter // Sorcery — Adventure

Sword Coast Serpent // Capsizing Wave

Creature — Serpent Dragon // Instant — Adventure

Kraken Hatchling

Creature — Kraken

Omen Hawker

Creature — Octopus Advisor

Merfolk Secretkeeper // Venture Deeper

Creature — Merfolk Wizard // Sorcery — Adventure

Lae'zel, Illithid Thrall

Legendary Creature — Gith Horror Warrior

Gray Slaad // Entropic Decay

Creature — Frog Horror // Sorcery — Adventure

Aquatic Alchemist // Bubble Up

Creature — Elemental // Sorcery — Adventure

Enlightened Maniac

Creature — Human

Cruel Somnophage // Can't Wake Up

Creature — Nightmare // Sorcery — Adventure

Ulasht, the Hate Seed

Legendary Creature — Hellion Hydra

Elusive Otter // Grove's Bounty

Creature — Otter // Sorcery — Adventure

Caelorna, Coral Tyrant

Legendary Creature — Octopus

Thing in the Ice // Awoken Horror

Creature — Horror // Creature — Kraken Horror

Galvanic Giant // Storm Reading

Creature — Giant Wizard // Instant — Adventure

Slithering Cryptid

Creature — Fish Mutant

Obscura Polymorphist

Creature — Octopus Wizard

Horned Loch-Whale // Lagoon Breach

Creature — Whale // Instant — Adventure

Sliptide Serpent

Creature — Serpent

Mercurial Transformation

Sorcery — Lesson

Hypnotic Sprite // Mesmeric Glare

Creature — Faerie // Instant — Adventure

Cephalid Retainer

Creature — Octopus

A-Young Blue Dragon // A-Sand Augury

Creature — Dragon // Sorcery — Adventure

Giant Octopus

Creature — Octopus

Fleshwrither

Creature — Horror

Creeping Peeper

Creature — Eye

Beanstalk Wurm // Plant Beans

Creature — Plant Wurm // Sorcery — Adventure

Aquamorph Entity

Creature — Shapeshifter

Uchuulon

Creature — Crab Ooze Horror