Duskmourn: House of Horror

Fear of Failed Tests | Enchantment Creature | Nightmare | Whenever Fear of Failed Tests deals combat damage to a player, draw that many cards. | Jana Heidersdorf

Fear of Falling | Enchantment Creature | Nightmare | Flying Whenever Fear of Falling attacks, target creature defending player controls gets -2/-0 and loses flying until your next turn. | Maxime Minard

Overlord of the Floodpits | Enchantment Creature | Avatar Horror | Impending 4—{1}{U}{U} (If you cast this spell for its impending cost, it enters with four time counters and isn't a creature until the last is removed. At the beginning of your end step, remove a time counter from it.) Flying Whenever Overlord of the Floodpits enters or attacks, draw two cards, then discard a card. | Abz J Harding

Underwater Tunnel // Slimy Aquarium | Enchantment // Enchantment | Room // Room | (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) // (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, manifest dread, then put a +1/+1 counter on that creature. | Titus Lunter

Marina Vendrell | Legendary Creature | Human Warlock | When Marina Vendrell enters, reveal the top seven cards of your library. Put all enchantment cards from among them into your hand and the rest on the bottom of your library in a random order. {T}: Lock or unlock a door of target Room you control. Activate only as a sorcery. | Magali Villeneuve