Duskmourn: House of Horror

Chainsaw | Artifact | Equipment | When Chainsaw enters, it deals 3 damage to up to one target creature. Whenever one or more creatures die, put a rev counter on Chainsaw. Equipped creature gets +X/+0, where X is the number of rev counters on Chainsaw. Equip {3} | J.P. Targete

Cursed Recording | Artifact | | Whenever you cast an instant or sorcery spell, put a time counter on Cursed Recording. Then if there are seven or more time counters on it, remove those counters and it deals 20 damage to you. {T}: When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy. | Kim Sokol

Enduring Courage | Enchantment Creature | Dog Glimmer | Whenever another creature you control enters, it gets +2/+0 and gains haste until end of turn. When Enduring Courage 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.) | Yigit Koroglu

Fear of Missing Out | Enchantment Creature | Nightmare | When Fear of Missing Out enters, discard a card, then draw a card. Delirium — Whenever Fear of Missing Out attacks for the first time each turn, if there are four or more card types among cards in your graveyard, untap target creature. After this phase, there is an additional combat phase. | John Stanko

Leyline of Resonance | Enchantment | | If Leyline of Resonance is in your opening hand, you may begin the game with it on the battlefield. Whenever you cast an instant or sorcery spell that targets only a single creature you control, copy that spell. You may choose new targets for the copy. | Sergey Glushakov

Razorkin Needlehead | Creature | Human Assassin | Razorkin Needlehead has first strike during your turn. Whenever an opponent draws a card, Razorkin Needlehead deals 1 damage to them. | Riccardo Federici

Waltz of Rage | Sorcery | | Target creature you control deals damage equal to its power to each other creature. Until end of turn, whenever a creature you control dies, exile the top card of your library. You may play it until the end of your next turn. | Mathias Kollros

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

The Jolly Balloon Man | Legendary Creature | Human Clown | Haste {1}, {T}: Create a token that's a copy of another target creature you control, except it's a 1/1 red Balloon creature in addition to its other colors and types and it has flying and haste. Sacrifice it at the beginning of the next end step. Activate only as a sorcery. | Campbell White

Roaring Furnace // Steaming Sauna | 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, this Room deals damage equal to the number of cards in your hand to target creature an opponent controls. // (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.) You have no maximum hand size. At the beginning of your end step, draw a card. | Miklós Ligeti

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

Peer Past the Veil | Instant | | Discard your hand. Then draw X cards, where X is the number of card types among cards in your graveyard. | Tuan Duong Chu

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

Thornspire Verge | Land | | {T}: Add {R}. {T}: Add {G}. Activate only if you control a Mountain or a Forest. | Kasia 'Kafis' Zielińska