Spell Blast

Instant

Counter target spell with converted mana cost X. (For example, if that spell's mana cost is , X is 5.)

Spell Contortion

Instant

Multikicker (You may pay an additional any number of times as you cast this spell.)

Counter target spell unless its controller pays . Draw a card for each time Spell Contortion was kicked.

Spell Crumple

Instant

Counter target spell. If that spell is countered this way, put it on the bottom of its owner's library instead of into that player's graveyard. Put Spell Crumple on the bottom of its owner's library.

Spell Pierce

Instant

Counter target noncreature spell unless its controller pays .

"There's a hole in your plan."
-Noyan Dar, Tazeem lullmage

Spell Rupture

Instant

Counter target spell unless its controller pays , where X is the greatest power among creatures you control.

"Like water, mana will drain from an inferior vessel."
-Jalan Tosk, Simic forcemage

Spell Shrivel

Instant

Devoid (This card has no color.)

Counter target spell unless its controller pays . If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Spell Snare

Instant

Counter target spell with converted mana cost 2.

Every culture has its unlucky numbers. In a city where you're either alone, in a crowd, or being stabbed in the back, two is the worst number of all.

Spell Snip

Instant

Counter target spell unless its controller pays .

Cycling (, Discard this card: Draw a card.)

"Magic cast through a hand of flesh is just as weak as the flesh itself."
-Lodus of the Ethersworn

Sphinx's Revelation

Instant

You gain X life and draw X cards.

"Let the knowledge of absolute law inspire you to live a life of absolute order."

Spidery Grasp

Instant

Untap target creature. It gets +2/+4 and gains reach until end of turn. (It can block creatures with flying.)

"Nobody's seen the Lady of Videns for years. Poor dear, no companions at all in that old castle."
-Yonda of Gavony

Spinal Embrace

Instant

Cast Spinal Embrace only during combat.

Untap target creature you don't control and gain control of it. It gains haste until end of turn. At the beginning of the next end step, sacrifice it. If you do, you gain life equal to its toughness.

Split Decision

Instant

Will of the council - Choose target instant or sorcery spell. Starting with you, each player votes for denial or duplication. If denial gets more votes, counter the spell. If duplication gets more votes or the vote is tied, copy the spell. You may choose new targets for the copy.

Spoils of Blood

Instant

Put an X/X black Horror creature token onto the battlefield, where X is the number of creatures that died this turn.

"There are always leftovers."
-Derecht, flesh carver

Spontaneous Combustion

Instant

As an additional cost to cast Spontaneous Combustion, sacrifice a creature.

Spontaneous Combustion deals 3 damage to each creature.

"Heat of battle" is usually a metaphor.

Sprouting Vines

Instant

Search your library for a basic land card, reveal that card, and put it into your hand. Then shuffle your library.

Storm (When you cast this spell, copy it for each spell cast before it this turn.)

Stabbing Pain

Instant

Target creature gets -1/-1 until end of turn. Tap that creature.

"You can take the fight out of nearly any creature if you know where its soft spot is."
-Guttor, flesh-warper

Staggershock

Instant

Staggershock deals 2 damage to target creature or player.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Starfall

Instant

Starfall deals 3 damage to target creature. If that creature is an enchantment, Starfall deals 3 damage to that creature's controller.

"The most brilliant stars are not born of Nyx."
-Rhexenor, Akroan flamespeaker

Starstorm

Instant

Starstorm deals X damage to each creature.

Cycling (, Discard this card: Draw a card.)

Pardic barbarians didn't complain when the Order started blaming every crisis on the Cabal.

Statute of Denial

Instant

Counter target spell. If you control a blue creature, draw a card, then discard a card.

"Pyrotechnic activity of any sort is strictly prohibited. It is irrelevant that today is a holiday."

Stave Off

Instant

Target creature gains protection from the color of your choice until end of turn. (It can't be blocked, targeted, dealt damage, or enchanted by anything of that color.)

Steady Progress

Instant

Proliferate. (You choose any number of permanents and/or players with counters on them, then give each another counter of a kind already there.)

Draw a card.

"More of that strange oil . . . It's probably nothing."

Steam Augury

Instant

Reveal the top five cards of your library and separate them into two piles. An opponent chooses one of those piles. Put that pile into your hand and the other into your graveyard.

Keranos is a fickle god, delivering punishment as readily as prophecy.

Steel Sabotage

Instant

Choose one - Counter target artifact spell; or return target artifact to its owner's hand.

"You are hopelessly obsolete, my brothers. Come and join the Great Work."
-Rhmir, Hand of the Augur

Stifle

Instant

Counter target activated or triggered ability. (Mana abilities can't be targeted.)

"If I wanted your opinion, I'd have told you what it was."
-Pemmin, Riptide survivor

Stir the Pride

Instant

Choose one - Creatures you control get +2/+2 until end of turn; or until end of turn, creatures you control gain "Whenever this creature deals damage, you gain that much life."

Entwine (Choose both if you pay the entwine cost.)

Stoic Rebuttal

Instant

Metalcraft - Stoic Rebuttal costs less to cast if you control three or more artifacts.

Counter target spell.

Obsessed with the pursuit of knowledge above all else, vedalken can appear to be cold and emotionless.

Stoke the Flames

Instant

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Stoke the Flames deals 4 damage to target creature or player.

Stone Idol Trap

Instant - Trap

Stone Idol Trap costs less to cast for each attacking creature.

Put a 6/12 colorless Construct artifact creature token with trample onto the battlefield. Exile it at the beginning of your next end step.

Stonefury

Instant

Stonefury deals damage to target creature equal to the number of lands you control.

Akoum can make any intruder look small.

Strangling Soot

Instant

Destroy target creature with toughness 3 or less.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

"What good is your blade without your breath?"
-Greht, Gathan warlord

Street Spasm

Instant

Street Spasm deals X damage to target creature without flying you don't control.

Overload (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")

Strength of the Tajuru

Instant

Multikicker (You may pay an additional any number of times as you cast this spell.)

Choose target creature, then choose another target creature for each time Strength of the Tajuru was kicked. Put X +1/+1 counters on each of them.

Stroke of Genius

Instant

Target player draws X cards.

After a hundred failed experiments, Urza was stunned to find that common silver passed through the portal undamaged. He immediately designed a golem made of the metal.

Stubborn Denial

Instant

Counter target noncreature spell unless its controller pays .

Ferocious - If you control a creature with power 4 or greater, counter that spell instead.

The Temur have no patience for subtlety.

Stymied Hopes

Instant

Counter target spell unless its controller pays . Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

When a god's will is against you, the day never ends well.

Sudden Reclamation

Instant

Put the top four cards of your library into your graveyard, then return a creature card and a land card from your graveyard to your hand.

"There is no secret buried so deep that we will never find it."
-Kurtar, Sultai necromancer

Sudden Shock

Instant

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)

Sudden Shock deals 2 damage to target creature or player.

Arc mages aren't known for their patience.

Sudden Spoiling

Instant

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)

Until end of turn, creatures target player controls lose all abilities and have base power and toughness 0/2.

Sudden Storm

Instant

Tap up to two target creatures. Those creatures don't untap during their controllers' next untap steps. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

No matter how big and strong you are, the sea is bigger and stronger.