Destroy target artifact, enchantment, or creature with flying. If that permanent's mana value was 3 or less, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

: Put a +1/+1 counter on Carnivorous Moss-Beast.

At the beginning of your upkeep, tap Carnophage unless you pay 1 life.

At the beginning of each of your main phases, if you haven't added mana with this ability this turn, you may add X mana of any one color, where X is the number of Islands target opponent controls.

When Carrier Thrall dies, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add ."

: Carrion Ants gets +1/+1 until end of turn.

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

Carrion Feeder can't block.

Sacrifice a creature: Put a +1/+1 counter on Carrion Feeder.

Pay 1 life: Carrion Howler gets +2/-1 until end of turn.

Flying

When Carrion Locust enters, exile target card from an opponent's graveyard. If it was a creature card, that player loses 1 life.

Flying

Defender (This creature can't attack.)

: Regenerate Carrion Wall.

: Exile Carrionette and target creature unless that creature's controller pays . Activate only if Carrionette is in your graveyard.

Enchant Equipment

When Carry Away enters, unattach enchanted Equipment.

You control enchanted Equipment.

Whenever Carth the Lion enters or a planeswalker you control dies, look at the top seven cards of your library. You may reveal a planeswalker card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Planeswalkers' loyalty abilities you activate cost an additional +1 to activate.

When Cartographer's Companion enters, create a Map token. (It's an artifact with ", , Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery.")

Look at the top seven cards of your library. Put up to two land cards from among them onto the battlefield tapped. Put the rest on the bottom of your library in a random order.

Enchant creature you control

When Cartouche of Knowledge enters, draw a card.

Enchanted creature gets +1/+1 and has flying.

Enchant creature you control

When Cartouche of Strength enters, you may have enchanted creature fight target creature an opponent controls. (Each deals damage equal to its power to the other.)

Enchanted creature gets +1/+1 and has trample.

Defender (This creature can't attack.)

When Carven Caryatid enters, draw a card.

Indestructible

: Add .

, : Add five mana in any combination of colors.

When this Case enters, it deals 3 damage to target creature an opponent controls.

To solve — Three or more sources you controlled dealt damage this turn. (If unsolved, solve at the beginning of your end step.)

Solved — Sacrifice this Case: Exile the top three cards of your library. Choose one of them. You may play that card this turn.

When this Case enters, choose target creature you don't control. Each creature you control deals 1 damage to that creature.

To solve — Three or more creatures attacked this turn. (If unsolved, solve at the beginning of your end step.)

Solved — Creatures you control get +1/+0.

Whenever a Detective you control enters or is turned face up, put a +1/+1 counter on it.

To solve — You control three or more Detectives. (If unsolved, solve at the beginning of your end step.)

Solved — If one or more tokens would be created under your control, those tokens plus a Clue token are created instead. (It's an artifact with ", Sacrifice this artifact: Draw a card.")

When this Case enters, search your library for a basic land card, reveal it, put it into your hand, then shuffle.

To solve — There are five colors among permanents you control. (If unsolved, solve at the beginning of your end step.)

Solved — At the beginning of combat on your turn, target creature you control gains flying, double strike, and vigilance until end of turn.

Enchant creature

Enchanted creature gets -2/-0 and can't block.

Destroy all non-Giant creatures. (Then exile this card. You may cast the creature later from exile.)

Enchant creature

When Castaway's Despair enters, tap enchanted creature.

Enchanted creature doesn't untap during its controller's untap step.

Castle Embereth enters tapped unless you control a Mountain.

: Add .

, : Creatures you control get +1/+0 until end of turn.

Flying

As long as Castle Raptors is untapped, it gets +0/+2.

Castle Vantress enters tapped unless you control an Island.

: Add .

, : Scry 2.

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

Vigilance

When Cataclysmic Gearhulk enters, each player chooses an artifact, a creature, an enchantment, and a planeswalker from among the nonland permanents they control, then sacrifices the rest.

Devoid (This card has no color.)

When Catacomb Sifter enters, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add ."

Whenever another creature you control dies, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Tap five untapped Soldiers you control: Exile target creature.

Gain control of target permanent until end of turn. Untap it. It gains haste until end of turn.

Fuse (You may cast one or both halves of this card from your hand.)

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

, : Search your library for a Mercenary permanent card with mana value 4 or less, put it onto the battlefield, then shuffle.

Sacrifice a creature: Regenerate Cateran Overlord.

, : Search your library for a Mercenary permanent card with mana value 6 or less, put it onto the battlefield, then shuffle.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

, : Search your library for a Mercenary permanent card with mana value 5 or less, put it onto the battlefield, then shuffle.

Goblins you control and Elementals you control have menace. (They can't be blocked except by two or more creatures.)

Enchant creature

Enchanted creature has vigilance and "At the beginning of your end step, create a 1/1 white Human creature token."

Whenever a creature you control enters, put a +1/+1 counter on each creature you control.

: Target player mills a card.

Choose one —

• Cathartic Pyre deals 3 damage to target creature or planeswalker.

• Discard up to two cards, then draw that many cards.

Each creature you control with a counter on it has ward . (Whenever it becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

: Put a +1/+1 counter on target creature that entered this turn.

White legendary creatures you control have "bands with other legendary creatures." (Any legendary creatures can attack in a band as long as at least one has "bands with other legendary creatures." Bands are blocked as a group. If at least two legendary creatures you control, one of which has "bands with other legendary creatures," are blocking or being blocked by the same creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

When Cathedral Sanctifier enters, you gain 3 life.

First strike, reach

Whenever Catti-brie of Mithral Hall attacks, put a +1/+1 counter on it for each Equipment attached to it.

, Remove all +1/+1 counters from Catti-brie: It deals X damage to target attacking or blocking creature an opponent controls, where X is the number of counters removed this way.

Spree (Choose one or more additional costs.)

+ — Caught in the Crossfire deals 2 damage to each outlaw creature. (Assassins, Mercenaries, Pirates, Rogues, and Warlocks are outlaws.)

+ — Caught in the Crossfire deals 2 damage to each non-outlaw creature.