Frilled Sea Serpent

Creature — Serpent

Shrouded Serpent

Creature — Serpent

Slither Blade

Creature — Snake Rogue

Infiltrate

Instant

Passwall Adept

Creature — Human Wizard

Cephalid Pathmage

Creature — Octopus Wizard

Scrapdiver Serpent

Creature — Serpent

Kaseto, Orochi Archmage

Legendary Creature — Snake Wizard

Amphin Pathmage

Creature — Salamander Wizard

Neurok Invisimancer

Creature — Human Wizard

Ashiok's Skulker

Creature — Nightmare

Serpent of Yawning Depths

Enchantment Creature — Serpent

Sewer Crocodile

Creature — Crocodile

Crafty Pathmage

Creature — Human Wizard

Enter the Enigma

Sorcery

Ghostform

Sorcery

Covert Operative

Creature — Human Wizard

Blockade Runner

Creature — Merfolk

Minamo Sightbender

Creature — Human Wizard

Touch of Invisibility

Sorcery

Trespassing Souleater

Artifact Creature — Phyrexian Construct

Trailblazer

Instant

Coralhelm Guide

Creature — Merfolk Scout Ally

Elvenking's Harper

Creature — Elf Bard

Latch Seeker

Creature — Spirit

Kozilek's Pathfinder

Creature — Eldrazi

Clammy Prowler

Enchantment Creature — Horror

A-Sewer Crocodile

Creature — Crocodile

Mistford River Turtle

Creature — Turtle

Prowling Serpopard

Creature — Cat Snake

Tormented Soul

Creature — Spirit