Duskmourn: House of Horror

Creeping Peeper | Creature | Eye | {T}: Add {U}. Spend this mana only to cast an enchantment spell, unlock a door, or turn a permanent face up. | Maxime Minard

Fear of Isolation | Enchantment Creature | Nightmare | As an additional cost to cast this spell, return a permanent you control to its owner's hand. Flying | Irina Nordsol

Floodpits Drowner | Creature | Merfolk | Flash Vigilance When Floodpits Drowner enters, tap target creature an opponent controls and put a stun counter on it. {1}{U}, {T}: Shuffle Floodpits Drowner and target creature with a stun counter on it into their owners' libraries. | John Tedrick

Paranormal Analyst | Creature | Human Detective | Whenever you manifest dread, put a card you put into your graveyard this way into your hand. | James Ryman

Piranha Fly | Creature | Fish Insect | Flying Piranha Fly enters tapped. | Kekai Kotaki

Silent Hallcreeper | Enchantment Creature | Horror | Silent Hallcreeper can't be blocked. Whenever Silent Hallcreeper deals combat damage to a player, choose one that hasn't been chosen — • Put two +1/+1 counters on Silent Hallcreeper. • Draw a card. • Silent Hallcreeper becomes a copy of another target creature you control. | Joshua Raphael

Stalked Researcher | Creature | Human Wizard | Defender Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, Stalked Researcher can attack this turn as though it didn't have defender. | Marta Nael

Gremlin Tamer | Creature | Human Scout | Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, create a 1/1 red Gremlin creature token. | Billy Christian

Inquisitive Glimmer | Enchantment Creature | Fox Glimmer | Enchantment spells you cast cost {1} less to cast. Unlock costs you pay cost {1} less. | Julie Dillon

Nashi, Searcher in the Dark | Legendary Creature | Rat Ninja Wizard | Menace Whenever Nashi, Searcher in the Dark deals combat damage to a player, you mill that many cards. You may put any number of legendary and/or enchantment cards from among them into your hand. If you put no cards into your hand this way, put a +1/+1 counter on Nashi. | Johan Grenier

Skullsnap Nuisance | Creature | Insect Skeleton | Flying Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) | Allen Douglas

Intruding Soulrager | Creature | Spirit | Vigilance {T}, Sacrifice a Room: Intruding Soulrager deals 2 damage to each opponent. Draw a card. | Jeremy Wilson

Oblivious Bookworm | Creature | Human Wizard | At the beginning of your end step, you may draw a card. If you do, discard a card unless a permanent entered the battlefield face down under your control this turn or you turned a permanent face up this turn. | Josh Newton