Duskmourn: House of Horror Instant-Speed Tricks

This is a list of all the instant-speed tricks in Duskmourn: House of Horror. Each color is sorted by converted mana cost.

• Colors other than Blue and Black have fewer instants than in other recent sets. If you exclude the landcyclers, White and Green only have two instants each at Common and two more at Uncommon, while Red has three Commons and three Uncommons.
• Blue has six ways to generate creatures at instant speed, which is more than is typical: Twist Reality and Glimmerburst at Common, Floodpits Drowner and Fear of Impostors at Uncommon, and Entity Tracker and Enduring Curiosity at Rare. The other colors have one each.
• There are three ways to manifest dread at instant speed: Twist Reality, Turn Inside Out, and Break Down the Door.

Color	Mana Cost	Card	Rarity	Type	Oracle Text	Notes
Colorless		Bear Trap		Artifact	Flash {3}, {T}, Sacrifice Bear Trap: It deals 3 damage to target creature.
White	-	The Wandering Rescuer		Creature	Flash Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Double strike Other tapped creatures you control have hexproof.	3/4
		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.
		Shardmage's Rescue		Enchantment	Flash Enchant creature you control As long as Shardmage's Rescue entered this turn, enchanted creature has hexproof. Enchanted creature gets +1/+1.
		Unwanted Remake		Instant	Destroy target creature. Its controller manifests dread. (That player looks at the top two cards of their library, then puts one onto the battlefield face down as a 2/2 creature and the other into their graveyard. If it's a creature card, it can be turned face up any time for its mana cost.)
		Shepherding Spirits		Creature	Flying Plainscycling {2} ({2}, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.)
	/	Seized from Slumber		Instant	This spell costs {3} less to cast if it targets a tapped creature. Destroy target creature.
Blue		Daggermaw Megalodon		Creature	Vigilance Islandcycling {2} ({2}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)
		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.)
		Floodpits Drowner		Creature	Flash Vigilance When Floodpits Drowner enters, tap target creature an opponent controls and put a stun counter on it. {1}{U}, {T}: Shuffle Floodpits Drowner and target creature with a stun counter on it into their owners' libraries.	2/1
		Get Out		Instant	Choose one — • Counter target creature or enchantment spell. • Return one or two target creatures and/or enchantments you own to your hand.
		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.)	Manifest Dread
		Fear of Impostors		Enchantment Creature	Flash When Fear of Impostors enters, counter target spell. Its controller manifests dread. (That player looks at the top two cards of their library, then puts one onto the battlefield face down as a 2/2 creature and the other into their graveyard. If it's a creature card, it can be turned face up any time for its mana cost.)	3/2
		Entity Tracker		Creature	Flash Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, draw a card.	2/3
		Glimmerburst		Instant	Draw two cards. Create a 1/1 white Glimmer enchantment creature token.	1/1
		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.)
		Enduring Curiosity		Enchantment Creature	Flash Whenever a creature you control deals combat damage to a player, draw a card. When Enduring Curiosity 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.)	4/3
Black		Spectral Snatcher		Creature	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.)
		Give In to Violence		Instant	Target creature gets +2/+2 and gains lifelink until end of turn.
		Winter's Intervention		Instant	Winter's Intervention deals 2 damage to target creature. You gain 2 life.
		Nowhere to Run		Enchantment	Flash When Nowhere to Run enters, target creature an opponent controls gets -3/-3 until end of turn. Creatures your opponents control can be the targets of spells and abilities as though they didn't have hexproof. Ward abilities of those creatures don't trigger.
		Appendage Amalgam		Enchantment Creature	Flash Whenever Appendage Amalgam attacks, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)	3/2
		Murder		Instant	Destroy target creature.
		Withering Torment		Instant	Destroy target creature or enchantment. You lose 2 life.
		Live or Die		Instant	Choose one — • Return target creature card from your graveyard to the battlefield. • Destroy target creature.	Creature from Opponent's Graveyard
Red		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.)	Manifest Dread
		Violent Urge		Instant	Target creature gets +1/+0 and gains first strike until end of turn. Delirium — If there are four or more card types among cards in your graveyard, that creature gains double strike until end of turn.
		Bedhead Beastie		Creature	Menace (This creature can't be blocked except by two or more creatures.) Mountaincycling {2} ({2}, Discard this card: Search your library for a Mountain card, reveal it, put it into your hand, then shuffle.)
		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.
		Untimely Malfunction		Instant	Choose one — • Destroy target artifact. • Change the target of target spell or ability with a single target. • One or two target creatures can't block this turn.
	/	Betrayer's Bargain		Instant	As an additional cost to cast this spell, sacrifice a creature or enchantment or pay {2}. Betrayer's Bargain deals 5 damage to target creature. If that creature would die this turn, exile it instead.
		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.
Green		Slavering Branchsnapper		Creature	Trample Forestcycling {2} ({2}, Discard this card: Search your library for a Forest card, reveal it, put it into your hand, then shuffle.)
		Horrid Vigor		Instant	Target creature gains deathtouch and indestructible until end of turn.
		Altanak, the Thrice-Called		Creature	Trample Whenever Altanak, the Thrice-Called becomes the target of a spell or ability an opponent controls, draw a card. {1}{G}, Discard Altanak, the Thrice-Called: Return target land card from your graveyard to the battlefield tapped.
		Frantic Strength		Enchantment	Flash Enchant creature Enchanted creature gets +2/+2 and has trample.
		Break Down the Door		Instant	Choose one — • Exile target artifact. • Exile target enchantment. • 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.)	Manifest Dread
Multi-Color		Growing Dread		Enchantment	Flash When Growing Dread enters, 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.) Whenever you turn a permanent face up, put a +1/+1 counter on it.
	/	Drag to the Roots		Instant	Delirium — This spell costs {2} less to cast as long as there are four or more card types among cards in your graveyard. Destroy target nonland permanent.
		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.