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

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Any number of target nonland permanents you control phase out. (Treat them and anything attached to them as though they don't exist until your next turn.)

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.

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

When Cliffhaven Kitesail enters, attach it to target creature you control.

Equipped creature has flying.

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

Cliffrunner Behemoth has haste as long as you control a red permanent.

Cliffrunner Behemoth has lifelink as long as you control a white permanent.

Vigilance

, Sacrifice Cliffside Rescuer: Target permanent you control gains protection from each of your opponents until end of turn. (It can't be blocked, targeted, dealt damage, enchanted, or equipped by anything controlled by those players.)

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

: Add or .

Defender

Evolve (Whenever a creature enters under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Prevent all combat damage that would be dealt this turn.

Fateful hour — If you have 5 or less life, tap all attacking creatures. Those creatures don't untap during their controller's next untap step.

Equipped creature gets +2/+0 and has shroud. (It can't be the target of spells or abilities.)

Whenever a Rogue creature enters, you may attach Cloak and Dagger to it.

Equip

Target creature gains flying until end of turn.

Draw a card.

Enchant creature

Enchanted creature can't be blocked.

Training (Whenever this creature attacks with another creature with greater power, put a +1/+1 counter on this creature.)

Whenever one or more +1/+1 counters are put on one or more Humans you control, draw a card. This ability triggers only once each turn.

Commander creatures you own have "At the beginning of your end step, if a creature card was put into your graveyard from anywhere this turn, create two tapped 1/1 green Squirrel creature tokens."

, : Move the CRANK counter to your Contraption deck's next sprocket and crank any number of that sprocket's Contraptions.

When Clocknapper enters, choose beginning phase, first main phase, combat phase, postcombat main phase, or ending phase. Steal that phase from target player during their next turn. (That phase occurs as though it's your turn instead.)

Flying

Clockwork Avian enters 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.

Clockwork Beetle enters with two +1/+1 counters on it.

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

Flying

Clockwork Dragon enters 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.

You may exert Clockwork Droid as it attacks. When you do, it can't be blocked this turn and you scry 1. (An exerted creature won't untap during your next untap step. To scry 1, look at the top card of your library. You may put that card on the bottom.)

, : Regenerate target artifact creature.

Haste

When Clockwork Percussionist dies, exile the top card of your library. You may play it until the end of your next turn.

Clockwork Steed enters with four +1/+0 counters on it.

Clockwork Steed can't be blocked by artifact creatures.

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

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

Trample

Clockwork Vorrac enters with four +1/+1 counters on it.

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

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

At the beginning of your upkeep, you may transform Cloistered Youth.

When Clone Crafter enters the battlefield, conjure a duplicate of a random creature card from your opponent's library into your hand. It perpetually gains "You may spend mana as though it were mana of any color to cast this spell."

Imprint — When Clone Shell enters, look at the top four cards of your library, exile one face down, then put the rest on the bottom of your library in any order.

When Clone Shell dies, turn the exiled card face up. If it's a creature card, put it onto the battlefield under your control.

This spell costs less to cast during your end step.

Destroy target creature or planeswalker you don't control. Put a +1/+1 counter on up to one target creature you control.

Whenever another permanent you control becomes the target of a spell or ability an opponent controls, you may return that permanent to its owner's hand.

Flying

Cloud Djinn can block only creatures with flying.

Flying

Cloud Elemental can block only creatures with flying.

Flying

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

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

Flying

Cloud Spirit can block only creatures with flying.

Flying

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

Flying

When Cloudchaser Kestrel enters, destroy target enchantment.

: Target permanent becomes white until end of turn.

Reach (This creature can block creatures with flying.)

When Cloudform enters, it becomes an Aura with enchant creature. Manifest the top card of your library and attach Cloudform to it. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Enchanted creature has flying and hexproof.

Flying

: Cloudheath Drake gains vigilance until end of turn.

All creatures get -X/-X until end of turn, where X is the greatest mana value of a commander you own on the battlefield or in the command zone.

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.)

Reach

Whenever this creature mutates, you may discard a card. If you do, draw a card.

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

Flying

, , Discard a card: Create a 1/1 blue Faerie creature token named Cloud Sprite. It has flying and "Cloud Sprite can block only creatures with flying."

Sliver creatures you control have flying and haste.

Flying

Equipped creature has flying and "You can't lose the game and your opponents can't win the game."

Reconfigure (: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

Flash

Reach

When Cloudthresher enters, it deals 2 damage to each creature with flying and each player.

Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Whenever you cast a multicolored instant or sorcery spell, you may pay . If you do, copy that spell. You may choose new targets for the copy.

Visit — Create a 1/1 white Clown Robot artifact creature token.

Lights — 2, 6

Visit — Create a 1/1 white Clown Robot artifact creature token.

Lights — 4, 6