Burst of Energy

Instant

Untap target permanent.

"I stand ready to die for our world. Who will stand with me?"
-Radiant, archangel

Burst of Strength

Instant

Put a +1/+1 counter on target creature and untap it.

"Our fight is not about territory or revenge. It is about freedom, plain and simple."
-Ruric Thar, Ghor-Clan chieftain

Butcher's Glee

Instant

Target creature gets +3/+0 and gains lifelink until end of turn. Regenerate it. (Damage dealt by a creature with lifelink also causes its controller to gain that much life.)

The Crave made Kneecleaver think she was bigger than the dragon.

Cabal Ritual

Instant

Add to your mana pool.

Threshold - Add to your mana pool instead if seven or more cards are in your graveyard.

"Each syllable chills your veins. Each word rattles your mind."
-Cabal Patriarch

Cackling Counterpart

Instant

Put a token onto the battlefield that's a copy of target creature you control.

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

Cackling Flames

Instant

Cackling Flames deals 3 damage to target creature or player.

Hellbent - Cackling Flames deals 5 damage to that creature or player instead if you have no cards in hand.

"I like a little entertainment with my dinner."
-Rakdos

Call for Blood

Instant - Arcane

As an additional cost to cast Call for Blood, sacrifice a creature.

Target creature gets -X/-X until end of turn, where X is the sacrificed creature's power.

Call to Glory

Instant

Untap all creatures you control. Samurai creatures you control get +1/+1 until end of turn.

"General Takeno glared at us as if we were the enemy. ‘The day is not over yet,' he shouted, ‘and unless you have a nezumi's heart, you will stand and fight'"
-Battle of Akagi River: A Survivor's Tale

Call to Heel

Instant

Return target creature to its owner's hand. Its controller draws a card.

On Bant, a sigil is both a prize of honor and a bond of duty. The one who bears it may be called to fulfill that charge at any moment.

Camouflage

Instant

Cast Camouflage only during your declare attackers step.

This turn, instead of declaring blockers, each defending player chooses any number of creatures he or she controls and divides them into a number of piles equal to the number of attacking creatures for whom that player is the defending player. Creatures he or she controls that can block additional creatures may likewise be put into additional piles. Assign each pile to a different one of those attacking creatures at random. Each creature in a pile that can block the creature that pile is assigned to does so. (Piles can be empty.)

Cancel

Instant

Counter target spell.

Candles' Glow

Instant - Arcane

Prevent the next 3 damage that would be dealt to target creature or player this turn. You gain life equal to the damage prevented this way.

Splice onto Arcane (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Cankerous Thirst

Instant

If was spent to cast Cankerous Thirst, you may have target creature get -3/-3 until end of turn. If was spent to cast Cankerous Thirst, you may have target creature get +3/+3 until end of turn. (Do both if was spent.)

Nothing warms the bark on a chilly day like a draught of elf.

Canopy Claws

Instant

Target creature loses flying until end of turn.

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

Capsize

Instant

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)

Return target permanent to its owner's hand.

Captain's Maneuver

Instant

The next X damage that would be dealt to target creature or player this turn is dealt to another target creature or player instead.

Sisay discovered that the mirrored hull of the Weatherlight could be used as a defensive weapon.

Carbonize

Instant

Carbonize deals 3 damage to target creature or player. That creature can't be regenerated this turn. If the creature would die this turn, exile it instead.

Careful Consideration

Instant

Target player draws four cards, then discards three cards. If you cast this spell during your main phase, instead that player draws four cards, then discards two cards.

"Sages who take the time to verify their sources are rewarded for their diligence."
-Jhoira, to Teferi

Carom

Instant

The next 1 damage that would be dealt to target creature this turn is dealt to another target creature instead.

Draw a card.

Her enemy's strength is her own.

Carrion

Instant

As an additional cost to cast Carrion, sacrifice a creature.

Put X 0/1 black Insect creature tokens onto the battlefield, where X is the sacrificed creature's power.

King or herder, the maggots care not.

Carrion Call

Instant

Put two 1/1 green Insect creature tokens with infect onto the battlefield. (They deal damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

The natural order is out of order.

Catalog

Instant

Draw two cards, then discard a card.

Though those who study are as many as the hairs on an ox, those who succeed are as rare as unicorns' horns.
-Chinese proverb

Cauldron Dance

Instant

Cast Cauldron Dance only during combat.

Return target creature card from your graveyard to the battlefield. That creature gains haste. Return it to your hand at the beginning of the next end step.

You may put a creature card from your hand onto the battlefield. That creature gains haste. Its controller sacrifices it at the beginning of the next end step.

Cauldron Haze

Instant

Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Cease-Fire

Instant

Target player can't cast creature spells this turn.

Draw a card.

When the crimson fades from the magical embers, a final wisp of smoke will rise. Soon after, hostilities will begin anew.

Celestial Flare

Instant

Target player sacrifices an attacking or blocking creature.

"You were defeated the moment you declared your aggression."-Gideon Jura

Celestial Purge

Instant

Exile target black or red permanent.

"A world without evil? Boring. Give me vile fiends to smite and banish any day."
-Sarlena, paladin of the Northern Verge

Center Soul

Instant

Target creature you control gains protection from the color of your choice until end of turn.

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.)

Cerebral Vortex

Instant

Target player draws two cards, then Cerebral Vortex deals damage to that player equal to the number of cards he or she has drawn this turn.

Izzet brains and Izzet boilers: contents under pressure.

Cerulean Wisps

Instant

Target creature becomes blue until end of turn. Untap that creature.

Draw a card.

"If you see ghostly lights by the river, eat three twigs of marshroot to ward off kelpies."
-Kithkin superstition

Chain of Plasma

Instant

Chain of Plasma deals 3 damage to target creature or player. Then that player or that creature's controller may discard a card. If the player does, he or she may copy this spell and may choose a new target for that copy.

Chain of Silence

Instant

Prevent all damage target creature would deal this turn. That creature's controller may sacrifice a land. If the player does, he or she may copy this spell and may choose a new target for that copy.

Chain of Vapor

Instant

Return target nonland permanent to its owner's hand. Then that permanent's controller may sacrifice a land. If the player does, he or she may copy this spell and may choose a new target for that copy.

Chain Stasis

Instant

You may tap or untap target creature. Then that creature's controller may pay . If the player does, he or she may copy this spell and may choose a new target for that copy.

"Here we go again."
-Kakra, Sea Troll

Chameleon Blur

Instant

Prevent all damage that creatures would deal to players this turn.

"Sometimes the best plan is neither fighting nor running."
-Freyalise

Chandra's Fury

Instant

Chandra's Fury deals 4 damage to target player and 1 damage to each creature that player controls.

"I asked if they wanted to do things the easy way. I meant easy for me."

Chandra's Outrage

Instant

Chandra's Outrage deals 4 damage to target creature and 2 damage to that creature's controller.

Chandra never believed in using her "inside voice."

Change of Heart

Instant

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)

Target creature can't attack this turn.

Channel Harm

Instant

Prevent all damage that would be dealt to you and permanents you control this turn by sources you don't control. If damage is prevented this way, you may have Channel Harm deal that much damage to target creature.

Chant of Vitu-Ghazi

Instant

Convoke (Each creature you tap while casting this spell reduces its cost by or by one mana of that creature's color.)

Prevent all damage that would be dealt by creatures this turn. You gain life equal to the damage prevented this way.