: Add . ( represents colorless mana.)

, Pay 1 life: Add one mana of any color. Spend this mana only to cast a spell with devoid.

, Sacrifice a creature: Regenerate Corrupted Harvester.

Counter target spell if its controller is poisoned.

Devoid (This card has no color.)

As Corrupted Shapeshifter enters the battlefield, it becomes your choice of a 3/3 creature with flying, a 2/5 creature with vigilance, or a 0/12 creature with defender.

When Corsair Captain enters the battlefield, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Other Pirates you control get +1/+1.

At the beginning of your upkeep, you may exile Cosima. If you do, it gains "Whenever a land enters the battlefield under your control, if Cosima is exiled, you may put a voyage counter on it. If you don't, return Cosima to the battlefield with X +1/+1 counters on it and draw X cards, where X is the number of voyage counters on it."

Whenever an opponent shuffles their library, you may put a +1/+1 counter on Cosi's Trickster.

First strike

At the beginning of your upkeep, destroy Cosmic Horror unless you pay . If Cosmic Horror is destroyed this way, it deals 7 damage to you.

If a permanent you control would be put into a graveyard from the battlefield this turn, exile it instead. Return it to the battlefield under its owner's control at the beginning of the next end step.

Foretell (During your turn, you may pay and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Choose target permanent card in your graveyard. If it has mana value 3 or less, you may put it onto the battlefield. If you don't put it onto the battlefield, put it into your hand.

You gain 3 life.

, : Choose an exiled card used to craft Cosmium Catalyst at random. You may cast that card without paying its mana cost.

When Cosmium Kiln enters the battlefield, create two 1/1 colorless Gnome artifact creature tokens.

Creatures you control get +1/+1.

At the beginning of your end step, draw a card if your life total is greater than your starting life total. Otherwise, you gain 2 life.

As an additional cost to cast this spell, sacrifice an artifact or creature.

Draw two cards.

Visit — You may put a sticker on a nonland permanent you own.

Lights — 2, 4, 6

Visit — You may put a sticker on a nonland permanent you own.

Lights — 3, 4, 6

Visit — You may put a sticker on a nonland permanent you own.

Lights — 4, 5, 6

Flying

Descend 4 — When Council of Echoes enters the battlefield, if there are four or more permanent cards in your graveyard, return up to one target nonland permanent other than Council of Echoes to its owner's hand.

Draw a card.

Whenever you scry, if you control an Island, you may exile Council's Deliberation from your graveyard. If you do, draw a card.

Draw two cards.

Counter target spell.

Counter target spell unless its controller pays for each card in your graveyard.

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

At the beginning of your upkeep, reveal the top card of your library. If it's a land card, put it into your graveyard and repeat this process.

Whenever a land card is put into your graveyard from anywhere, put a +1/+1 counter on Countryside Crusher.

When Courageous Outrider enters the battlefield, look at the top four cards of your library. You may reveal a Human card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

When Courier's Briefcase enters the battlefield, create a 1/1 green and white Citizen creature token.

, Sacrifice Courier's Briefcase: Add one mana of any color.

, , Sacrifice Courier's Briefcase: Draw three cards.

Play with the top card of your library revealed.

You may play lands from the top of your library.

Landfall — Whenever a land enters the battlefield under your control, you gain 1 life.

Reach (This creature can block creatures with flying.)

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

Vigilance

When Court Hussar enters the battlefield, look at the top three cards of your library, then put one of them into your hand and the rest on the bottom of your library in any order.

When Court Hussar enters the battlefield, sacrifice it unless was spent to cast it.

Whenever another white creature enters the battlefield under your control, tap target creature an opponent controls.

As Cover of Darkness enters the battlefield, choose a creature type.

Creatures of the chosen type have fear. (They can't be blocked except by artifact creatures and/or black creatures.)

Visit — Drop three cards you own from outside the game one at a time onto the playing area from a height of at least one foot (about 0.3 meters). If those cards completely cover Cover the Spot, claim the prize

Prize — You get , then you may put a sticker on a nonland permanent you own. Sacrifice Cover the Spot, then open an Attraction.

Lights — 2, 3, 5, 6

Visit — Drop three cards you own from outside the game one at a time onto the playing area from a height of at least one foot (about 0.3 meters). If those cards completely cover Cover the Spot, claim the prize

Prize — You get , then you may put a sticker on a nonland permanent you own. Sacrifice Cover the Spot, then open an Attraction.

Lights — 3, 4, 5, 6

When Covetous Castaway dies, mill three cards. (Put the top three cards of your library into your graveyard.)

Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

Each player chooses up to two creatures they control, then sacrifices the rest. Then you create a tapped Treasure token for each creature your opponents control.

Target opponent reveals their hand. You choose a nonland card from that player's graveyard or hand and exile it. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.

Whenever you activate an ability of an artifact or creature that isn't a mana ability, Crackdown Construct gets +1/+1 until end of turn.

Flash

When Crackling Spellslinger enters the battlefield, if you cast it, the next instant or sorcery spell you cast this turn has storm. (When you cast that spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

: Add .

, , Sacrifice Cradle of the Accursed: Create a 2/2 black Zombie creature token. Activate only as a sorcery.

When this creature enters the battlefield, this creature assembles a Contraption. (Put the top card of your Contraption deck face up onto one of your sprockets.)

Mountaincycling (, Discard this card: Search your library for a Mountain card, reveal it, put it into your hand, then shuffle.)

Backup 2 (When this creature enters the battlefield, put two +1/+1 counters on target creature. If that's another creature, it gains the following ability until end of turn.)

Trample

You may sacrifice a Mountain rather than pay this spell's mana cost.

Destroy target artifact.

Trample

Crash of Rhino Beetles gets +10/+10 as long as you control ten or more lands.

Create a tapped 4/4 green Rhino Warrior creature token for each tapped creature you control.

Creatures you control gain trample until end of turn. (A creature with trample can deal excess combat damage to the player or planeswalker it's attacking.)

Draw a card.

, Discard a card: Crashing Centaur gains trample until end of turn.

Threshold — As long as seven or more cards are in your graveyard, Crashing Centaur gets +2/+2 and has shroud. (It can't be the target of spells or abilities.)

Suspend 4— (Rather than cast this card from your hand, pay and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

Create two 4/4 green Rhino creature tokens with trample.

Crater's Claws deals X damage to any target.

Ferocious — Crater's Claws deals X plus 2 damage instead if you control a creature with power 4 or greater.

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

When Crawling Chorus dies, create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This creature can't block."

At the beginning of your upkeep, you may mill two cards.

Whenever one or more land cards are put into your graveyard from anywhere for the first time each turn, create a 1/1 green Insect creature token.

Flying, haste