When Clandestine Meddler enters the battlefield, suspect up to one other target creature you control. (A suspected creature has menace and can't block.)

Whenever one or more suspected creatures you control attack, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

When Clarion Cathars enters the battlefield, create a 1/1 white Human creature token.

Choose five permanents you control. For each of those permanents, you may search your library for a card with the same name as that permanent. Put those cards onto the battlefield tapped, then shuffle.

Target creature fights another target creature. (Each deals damage equal to its power to the other.)

Clattering Augur can't block.

When Clattering Augur enters the battlefield, you draw a card and you lose 1 life.

: Return Clattering Augur from your graveyard to your hand.

Enchant creature

When Claustrophobia enters the battlefield, tap enchanted creature.

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

Enchant artifact or creature

As long as enchanted permanent is a creature, it gets -1/-1 and can't block.

Enchanted permanent has "At the beginning of your upkeep, you lose 1 life."

Enchant creature

Enchanted creature gets +1/+0 for each Mountain you control and has first strike.

Clay Champion enters the battlefield with three +1/+1 counters on it for each spent to cast it.

When Clay Champion enters the battlefield, choose up to two other target creatures you control. For each spent to cast Clay Champion, put a +1/+1 counter on each of them.

Flying

, Throw Clay Pigeon into the air at least two feet above your head while seated: If you catch Clay Pigeon with one hand, prevent all damage a source of your choice would deal to you this turn and tap Clay Pigeon. Otherwise, sacrifice it.

: Regenerate Clay Statue.

Destroy all enchantments.

For each land, destroy that land unless any player pays 1 life.

Destroy all enchantments.

Threshold — If seven or more cards are in your graveyard, instead destroy all enchantments, then return all cards in your graveyard destroyed this way to the battlefield.

Choose one —

• Destroy target Vampire.

• Destroy target enchantment.

Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.

Draw a card.

Destroy target enchantment.

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

Target creature you control gets +1/+1 until end of turn. It deals damage equal to its power to target creature you don't control.

Target player shuffles their graveyard into their library.

Draw a card.

Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.)

At the beginning of your upkeep, you may gain life equal to the number of charge counters on Clearwater Goblet.

Creatures your opponents control get -1/-1 until end of turn. (Then exile this card. You may cast the creature later from exile.)

, , Sacrifice another Zombie: Create two tokens that are copies of the sacrificed creature.

Flash

Kicker (You may pay an additional as you cast this spell.)

Flying

When Cleaving Skyrider enters the battlefield, if it was kicked, it deals X damage to any target, where X is the number of attacking creatures.

Allies — At the beginning of your end step, put a +1/+1 counter on each of up to two other target legendary creatures.

Betrayal — Whenever a legendary creature with counters on it dies, draw a card for each counter on it. You lose 2 life.

When Cleric of the Forward Order enters the battlefield, you gain 2 life for each creature you control named Cleric of the Forward Order.

Enchant creature

Enchanted creature has "Whenever this creature attacks, tap target creature defending player controls."

If Clever Distraction would be put into a graveyard from anywhere, exile it instead.

Magecraft — Whenever you cast or copy an instant or sorcery spell, Clever Lumimancer gets +2/+2 until end of turn.

Cliffgate enters the battlefield tapped.

As Cliffgate enters the battlefield, choose a color other than red.

: Add or one mana of the chosen color.

Clifftop Retreat enters the battlefield tapped unless you control a Mountain or a Plains.

: Add or .

Enchant creature

Enchanted creature gets -4/-1.

Enchant creature you control

Whenever enchanted creature attacks and isn't blocked, you may have it assign no combat damage this turn. If you do, defending player discards a card at random.

Enchant creature

Enchanted creature has phasing and can't be blocked except by Walls. (It phases in or out before its controller untaps during each of their untap steps. While it's phased out, it's treated as though it doesn't exist.)

Equipped creature has flying and haste.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Flash (You may cast this spell any time you could cast an instant.)

Flying

Gathered Swarm — Whenever one or more tokens enter the battlefield under your control, put a +1/+1 counter on Cloakwood Swarmkeeper.

Flying

Clockwork Avian enters the battlefield with four +1/+0 counters on it.

At end of combat, if Clockwork Avian attacked or blocked this combat, remove a +1/+0 counter from it.

, : Put up to X +1/+0 counters on Clockwork Avian. This ability can't cause the total number of +1/+0 counters on Clockwork Avian to be greater than four. Activate only during your upkeep.

Flying

Clockwork Dragon enters the battlefield with six +1/+1 counters on it.

Whenever Clockwork Dragon attacks or blocks, remove a +1/+1 counter from it at end of combat.

: Put a +1/+1 counter on Clockwork Dragon.

Clockwork Hydra enters the battlefield with four +1/+1 counters on it.

Whenever Clockwork Hydra attacks or blocks, remove a +1/+1 counter from it. If you do, Clockwork Hydra deals 1 damage to any target.

: Put a +1/+1 counter on Clockwork Hydra.

Clockwork Swarm enters the battlefield with four +1/+0 counters on it.

Clockwork Swarm can't be blocked by Walls.

At end of combat, if Clockwork Swarm attacked or blocked this combat, remove a +1/+0 counter from it.

, : Put up to X +1/+0 counters on Clockwork Swarm. This ability can't cause the total number of +1/+0 counters on Clockwork Swarm to be greater than four. Activate only during your upkeep.

When Cloister Gargoyle enters the battlefield, venture into the dungeon. (Enter the first room or advance to the next room.)

As long as you've completed a dungeon, Cloister Gargoyle gets +3/+0 and has flying.

Whenever a creature you control becomes blocked, Close Quarters deals 1 damage to any target.

Flying

First strike (This creature deals combat damage before creatures without first strike.)

Flying

Cloud Elemental can block only creatures with flying.

Flying

When Cloud of Faeries enters the battlefield, untap up to two lands.

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

Flying

When Cloudblazer enters the battlefield, you gain 2 life and draw two cards.

Flying

When Cloudchaser Kestrel enters the battlefield, destroy target enchantment.

: Target permanent becomes white until end of turn.

Reach (This creature can block creatures with flying.)

When Cloudgoat Ranger enters the battlefield, create three 1/1 white Kithkin Soldier creature tokens.

Tap three untapped Kithkin you control: Cloudgoat Ranger gets +2/+0 and gains flying until end of turn.

As long as you control a Bird, Cloudreach Cavalry gets +2/+2 and has flying.