Duskmourn: House of Horror

Jump Scare | Instant | | Until end of turn, target creature gets +2/+2, gains flying, and becomes a Horror enchantment creature in addition to its other types. | John Tedrick

Seized from Slumber | Instant | | This spell costs {3} less to cast if it targets a tapped creature. Destroy target creature. | Miranda Meeks

Don't Make a Sound | Instant | | Counter target spell unless its controller pays {2}. If they do, 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.) | Zezhou Chen

Glimmerburst | Instant | | Draw two cards. Create a 1/1 white Glimmer enchantment creature token. | Dan Watson

Twist Reality | Instant | | Choose one — • Counter target spell. • 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.) | Allen Williams

Vanish from Sight | Instant | | Target nonland permanent's owner puts it on the top or bottom of their library. Surveil 1. (Look at the top card of your library. You may put it into your graveyard.) | Billy Christian

Give In to Violence | Instant | | Target creature gets +2/+2 and gains lifelink until end of turn. | Septian Fajrianto

Murder | Instant | | Destroy target creature. | Domenico Cava

Winter's Intervention | Instant | | Winter's Intervention deals 2 damage to target creature. You gain 2 life. | Cristi Balanescu

Impossible Inferno | Instant | | Impossible Inferno deals 6 damage to target creature. Delirium — If there are four or more card types among cards in your graveyard, exile the top card of your library. You may play it until the end of your next turn. | Edgar Sánchez Hidalgo

Scorching Dragonfire | Instant | | Scorching Dragonfire deals 3 damage to target creature or planeswalker. If that creature or planeswalker would die this turn, exile it instead. | Marta Nael

Turn Inside Out | Instant | | Target creature gets +3/+0 until end of turn. When it dies this turn, 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.) | Loïc Canavaggia

Horrid Vigor | Instant | | Target creature gains deathtouch and indestructible until end of turn. | Chris Cold