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.)

When Clattering Skeletons dies, venture into the dungeon. (Enter the first room or advance to the next room.)

Whenever you attack, target attacking Vampire that isn't a Demon becomes a Demon in addition to its other types. It gains "When this creature dies, draw a card and create a tapped 4/3 white and black Vampire Demon creature token with flying."

Enchant creature

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

Clay Revenant enters tapped.

: Return Clay Revenant from your graveyard to your hand.

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.

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 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.

Multicleave (You may pay an additional any number of times as you cast this spell. For each time you do, choose a paired set of square brackets and remove the words in between.)

Destroy target nonblack creature with mana value 3 or less an opponent controls. You and its controller each draw a card and lose 2 life. Create a tapped 1/1 white Spirit creature token with flying.

Vigilance

Whenever Clement, the Worrywort or another creature you control enters, return up to one target creature you control with lesser mana value to its owner's hand.

Frogs you control have ": Add or . Spend this mana only to cast a creature spell."

If Clergy of the Holy Nimbus would be destroyed, regenerate it.

: Clergy of the Holy Nimbus can't be regenerated this turn. Only your opponents may activate this ability.

When Cleric of the Forward Order enters, 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.

Haste

Sacrifice a Goblin: Clickslither gets +2/+2 and gains trample until end of turn.

Cliffgate enters tapped.

As Cliffgate enters, choose a color other than red.

: Add or one mana of the chosen color.

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

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

Reach

When Clifftop Lookout enters, reveal cards from the top of your library until you reveal a land card. Put that card onto the battlefield tapped and the rest on the bottom of your library in a random order.

Exile target card from a graveyard. If it was a creature card, you gain 3 life. Otherwise, you draw a card.

Escape—, Exile five other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)

Flying

Whenever you draw a card, put a +1/+1 counter on this creature.

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.)

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."

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.

Adamant — When Clockwork Servant enters, if at least three mana of the same color was spent to cast it, draw a card.

When Cloister Gargoyle enters, 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.

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."

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.

Flying

Cloud Elemental can block only creatures with flying.

Flying

Cloud Pirates can block only creatures with flying.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Cloud Sprite can block only creatures with flying.

: Add .

: Add or . Cloudcrest Lake doesn't untap during your next untap step.

When Cloudgoat Ranger enters, 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.

Cloudpost enters tapped.

: Add for each Locus on the battlefield.

Flying

Fading 3 <I>(This creature enters with three fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)</I>

Whenever a nonartifact permanent you control enters, you may return another permanent you control that shares a permanent type with it to its owner's hand.

Enchant creature

As long as enchanted creature is blue, it gets +1/+1 and has shroud. (It can't be the target of spells or abilities.)

As long as enchanted creature is red, it gets +1/+1 and has haste.

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

Return target creature to its owner's hand.

Awaken 3— (If you cast this spell for , also put three +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste. It's still a land.)

Enchant creature

Enchanted creature gets +3/+3 as long as it's a Zombie. Otherwise, it gets -3/-3.

: Coalborn Entity deals 1 damage to target creature token, player, or planeswalker.

While an opponent is choosing targets as part of casting a spell they control or activating an ability they control, that player must choose at least one Flagbearer on the battlefield if able.

Flying

Enlist (As this creature attacks, you may tap a nonattacking creature you control without summoning sickness. When you do, add its power to this creature's until end of turn.)

Enlist (As this creature attacks, you may tap a nonattacking creature you control without summoning sickness. When you do, add its power to this creature's until end of turn.)

Trample

Undaunted (This spell costs less to cast for each opponent.)

Return all nonland permanents to their owners' hands.

Draw two cards.

Awaken 4— (If you cast this spell for , also put four +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste. It's still a land.)

Sacrifice a land: Coastal Hornclaw gains flying until end of turn.

Coastal Tower enters tapped.

: Add or .