Duskmourn: House of Horror

Come Back Wrong | Sorcery | | Destroy target creature. If a creature card is put into a graveyard this way, return it to the battlefield under your control. Sacrifice it at the beginning of your next end step. | David Auden Nash

Demonic Counsel | Sorcery | | Search your library for a Demon card, reveal it, put it into your hand, then shuffle. Delirium — If there are four or more card types among cards in your graveyard, instead search your library for any card, put it into your hand, then shuffle. | Babs Webb

Doomsday Excruciator | Creature | Demon | Flying When Doomsday Excruciator enters, if it was cast, each player exiles all but the bottom six cards of their library face down. At the beginning of your upkeep, draw a card. | Denys Tsiperko

Enduring Tenacity | Enchantment Creature | Snake Glimmer | Whenever you gain life, target opponent loses that much life. When Enduring Tenacity dies, if it was a creature, return it to the battlefield under its owner's control. It's an enchantment. (It's not a creature.) | Isis

Grievous Wound | Enchantment | Aura | Enchant player Enchanted player can't gain life. Whenever enchanted player is dealt damage, they lose half their life, rounded up. | Martina Fačková

Leyline of the Void | Enchantment | | If Leyline of the Void is in your opening hand, you may begin the game with it on the battlefield. If a card would be put into an opponent's graveyard from anywhere, exile it instead. | Sergey Glushakov

Unholy Annex // Ritual Chamber | Enchantment // Enchantment | Room // Room | At the beginning of your end step, draw a card. If you control a Demon, each opponent loses 2 life and you gain 2 life. Otherwise, you lose 2 life. (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, create a 6/6 black Demon creature token with flying. (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.) | Matteo Bassini

Unstoppable Slasher | Creature | Zombie Assassin | Deathtouch Whenever Unstoppable Slasher deals combat damage to a player, they lose half their life, rounded up. When Unstoppable Slasher dies, if it had no counters on it, return it to the battlefield tapped under its owner's control with two stun counters on it. | Maxime Minard

Leyline of Mutation | Enchantment | | If Leyline of Mutation is in your opening hand, you may begin the game with it on the battlefield. You may pay {W}{U}{B}{R}{G} rather than pay the mana cost for spells that you cast. | Sergey Glushakov

Victor, Valgavoth's Seneschal | Legendary Creature | Human Warlock | Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, surveil 2 if this is the first time this ability has resolved this turn. If it's the second time, each opponent discards a card. If it's the third time, put a creature card from a graveyard onto the battlefield under your control. | Jeremy Wilson

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

Undead Sprinter | Creature | Zombie | Trample, haste You may cast Undead Sprinter from your graveyard if a non-Zombie creature died this turn. If you do, Undead Sprinter enters with a +1/+1 counter on it. | Nino Vecia

The Swarmweaver | Legendary Artifact Creature | Scarecrow | When The Swarmweaver enters, create two 1/1 black and green Insect creature tokens with flying. Delirium — As long as there are four or more card types among cards in your graveyard, Insects and Spiders you control get +1/+1 and have deathtouch. | Helge C. Balzer

Winter, Misanthropic Guide | Legendary Creature | Human Warlock | Ward {2} At the beginning of your upkeep, each player draws two cards. Delirium — As long as there are four or more card types among cards in your graveyard, each opponent's maximum hand size is equal to seven minus the number of those card types. | Jodie Muir

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

Blazemire Verge | Land | | {T}: Add {B}. {T}: Add {R}. Activate only if you control a Swamp or a Mountain. | Andrew Mar

Gloomlake Verge | Land | | {T}: Add {U}. {T}: Add {B}. Activate only if you control an Island or a Swamp. | Marco Gorlei