Mesmeric Fiend

Creature — Nightmare Horror

Fear of Abduction

Enchantment Creature — Nightmare

Yarok's Fenlurker

Creature — Horror

Nightveil Specter

Creature — Specter

Cackling Observer

Creature — Imp

Hypnotic Specter

Creature — Specter

Soul Scourge

Creature — Nightmare Horror

Hollow Specter

Creature — Specter

Wormfang Behemoth

Creature — Nightmare Fish Beast

Abyssal Horror

Creature — Horror

Shimian Specter

Creature — Specter

Dream Eater

Creature — Nightmare Sphinx

Scavenging Harpy

Creature — Harpy

Ashiok, Nightmare Weaver

Legendary Planeswalker — Ashiok

Psychic Symbiont

Creature — Nightmare Horror

Nightmare

Creature — Nightmare Horse

Umbris, Fear Manifest

Legendary Creature — Nightmare Horror

Night Terrors

Sorcery

Elder Brain

Creature — Horror

Headless Specter

Creature — Specter

Faceless Butcher

Creature — Nightmare Horror

Nyxathid

Creature — Elemental

Entropic Specter

Creature — Specter Spirit

Nightmarish End

Instant

Fiend of the Shadows

Creature — Vampire Wizard

Intellect Devourer

Creature — Horror

Doomsday Specter

Creature — Specter

Dark Hatchling

Creature — Horror

Cavern Harpy

Creature — Harpy Beast

Nightmare Unmaking

Sorcery

Fear of Isolation

Enchantment Creature — Nightmare