Flash

Flying

When Crookclaw Transmuter enters, switch target creature's power and toughness until end of turn.

, Sacrifice Crosis's Attendant: Add .

When Crossroads Candleguide enters, exile up to one target card from a graveyard.

: Add one mana of any color.

Whenever Crosstown Courier deals combat damage to a player, that player mills that many cards.

When Crossway Vampire enters, target creature can't block this turn.

Other white creatures get +1/+1.

Nonwhite creatures get -1/-1.

Pay 2 life: Return Crovax, Ascendant Hero to its owner's hand.

: Tap target creature.

: Crowd Favorites gets +0/+5 until end of turn.

As Crowd-Control Warden enters or is turned face up, put X +1/+1 counters on it, where X is the number of other creatures you control.

Disguise (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)

When Crown-Hunter Hireling enters, you become the monarch.

Crown-Hunter Hireling can't attack unless defending player is the monarch.

Whenever Cruel Celebrant or another creature or planeswalker you control dies, each opponent loses 1 life and you gain 1 life.

Deathtouch

When Cruel Grimnarch enters, each opponent discards a card. For each opponent who can't, you gain 4 life.

Cruel Somnophage's power and toughness are each equal to the number of creature cards in all graveyards.

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

When Crumbling Colossus attacks, sacrifice it at end of combat.

Protection from black

Crusading Knight gets +1/+1 for each Swamp your opponents control.

Double strike

When Crypt Champion enters, each player puts a creature card with mana value 3 or less from their graveyard onto the battlefield.

When Crypt Champion enters, sacrifice it unless was spent to cast it.

Sacrifice Crypt Creeper: Exile target card from a graveyard.

Extort (Whenever you cast a spell, you may pay . If you do, each opponent loses 1 life and you gain that much life.)

Whenever you tap a Swamp for mana, add an additional .

: Crypt Rats deals X damage to each creature and each player. Spend only black mana on X.

All Slivers have ": Regenerate target Sliver."

, , Discard a card: Create a 2/2 black Zombie creature token.

Tap three untapped Zombies you control: You draw a card and you lose 1 life.

When Cryptic Annelid enters, scry 1, then scry 2, then scry 3. (To scry X, look at the top X cards of your library, then put any number of them on the bottom and the rest on top in any order.)

This spell costs less to cast for each instant and sorcery card in your graveyard.

Vigilance

Whenever a face-down permanent you control enters and whenever Cryptid Inspector or another permanent you control is turned face up, put a +1/+1 counter on Cryptid Inspector.

Protector — Other artifact creatures you control have hexproof.

Defender (This creature can't attack.)

You have hexproof. (You can't be the target of spells or abilities your opponents control.)

Prevent all noncombat damage that would be dealt to other creatures you control.

At the beginning of your end step, Crystal Golem phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before you untap during your next untap step.)

Converge — Crystalline Crawler enters with a +1/+1 counter on it for each color of mana spent to cast it.

Remove a +1/+1 counter from Crystalline Crawler: Add one mana of any color.

: Put a +1/+1 counter on Crystalline Crawler.

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)

When Crystalline Nautilus becomes the target of a spell or ability, sacrifice it.

Enchanted creature gets +4/+4 and has "When this creature becomes the target of a spell or ability, sacrifice it."

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Lifelink

Whenever this creature mutates, create two 1/1 white Cat creature tokens with lifelink.

Devoid (This card has no color.)

Ingest (Whenever this creature deals combat damage to a player, that player exiles the top card of their library.)

, : Target player discards a card. Activate only as a sorcery.

, : Cult Guildmage deals 1 damage to target opponent or planeswalker.

Whenever Cult of Skaro attacks, choose one at random —

• Thay — Put a +1/+1 counter on each artifact creature you control.

• Caan — Draw two cards.

• Sec — Create a 3/3 black Dalek artifact creature token with menace.

• Jast — Each opponent loses 4 life.

When Cultbrand Cinder enters, put a -1/-1 counter on target creature.

Devoid (This card has no color.)

: Add . Spend this mana only to cast a colorless spell, activate an ability of a colorless permanent, or pay a cost that contains . ( represents colorless mana.)

When Culvert Ambusher enters or is turned face up, target creature blocks this turn if able.

Disguise (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Cunning Bandit.

At the beginning of the end step, if there are two or more ki counters on Cunning Bandit, you may flip it.

Haste

When Cunning Coyote enters, another target creature you control gets +1/+1 and gains haste until end of turn.

Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

If Cunning Giant is unblocked, you may have it assign its combat damage to a creature defending player controls.

Flash

Spells with flash you cast cost less to cast and can't be countered.

Whenever you cycle or discard a card, Cunning Survivor gets +1/+0 until end of turn and can't be blocked this turn.

Reach

Colorless creatures you control enter with two additional +1/+1 counters on them.

Whenever Curator Beastie enters or attacks, 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.)

Flying

Whenever you cycle or discard another card, scry 1.

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

Whenever Curie, Emergent Intelligence deals combat damage to a player, draw cards equal to its base power.

, Exile another nontoken artifact creature you control: Curie becomes a copy of the exiled creature, except it has "Whenever this creature deals combat damage to a player, draw cards equal to its base power."

Flying

You have no maximum hand size.

Whenever a creature token you control deals combat damage to a player, draw a card.

Flying

When you sacrifice a Clue, return Curious Cadaver from your graveyard to your hand.

: Add . Spend this mana only to cast an instant or sorcery spell.

At the beginning of your upkeep, if there are three or more instant and/or sorcery cards in your graveyard, transform Curious Homunculus.

Enchant creature

Curse of the Fire Penguin consumes and confuses enchanted creature.

When Cursebound Witch dies, draft a card from Cursebound Witch's spellbook.