Duskmourn: House of Horror

Appendage Amalgam | Enchantment Creature | Horror | Flash Whenever Appendage Amalgam attacks, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) | Bartek Fedyczak

Balemurk Leech | Creature | Leech | Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, each opponent loses 1 life. | John Tedrick

Cackling Slasher | Creature | Human Assassin | Deathtouch Cackling Slasher enters with a +1/+1 counter on it if a creature died this turn. | Johann Bodin

Fanatic of the Harrowing | Creature | Human Cleric | When Fanatic of the Harrowing enters, each player discards a card. If you discarded a card this way, draw a card. | Fajareka Setiawan

Fear of Lost Teeth | Enchantment Creature | Nightmare | When Fear of Lost Teeth dies, it deals 1 damage to any target and you gain 1 life. | Oriana Menendez

Fear of the Dark | Enchantment Creature | Nightmare | Whenever Fear of the Dark attacks, if defending player controls no Glimmer creatures, it gains menace and deathtouch until end of turn. (A creature with menace can't be blocked except by two or more creatures.) | Sam Wolfe Connelly

Innocuous Rat | Creature | Rat | When Innocuous Rat dies, manifest dread. (Look at the top two cards of your library. Put one onto the battlefield face down as a 2/2 creature and the other into your graveyard. Turn it face up any time for its mana cost if it's a creature card.) | Maxime Minard

Resurrected Cultist | Creature | Human Cleric | Delirium — {2}{B}{B}: Return Resurrected Cultist from your graveyard to the battlefield with a finality counter on it. Activate only if there are four or more card types among cards in your graveyard and only as a sorcery. (If a creature with a finality counter on it would die, exile it instead.) | Tyler Walpole

Spectral Snatcher | Creature | Spirit | Ward—Discard a card. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player discards a card.) Swampcycling {2} ({2}, Discard this card: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle.) | Domenico Cava