Riot (This creature enters with your choice of a +1/+1 counter or haste.)

Whenever Clamor Shaman attacks, target creature an opponent controls can't block this turn.

Choose one or more —

• Clan Defiance deals X damage to target creature with flying.

• Clan Defiance deals X damage to target creature without flying.

• Clan Defiance deals X damage to target player or planeswalker.

When Clandestine Chameleon enters, you get , then you may put a sticker on a nonland permanent you own.

Clandestine Chameleon has all abilities of ability stickers on other permanents you own and cards in your graveyard.

Impossible Girl — If Clara Oswald is your commander, choose a color before the game begins. Clara Oswald is the chosen color.

If a triggered ability of a Doctor you control triggers, that ability triggers an additional time.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Whenever you cast your second spell each turn, create a 1/1 white Spirit creature token with flying.

All Spirits have "When this permanent enters, you may have it deal 3 damage to target non-Spirit creature."

Non-Spirit creatures have "When this creature enters, you may have it deal 3 damage to target Spirit creature."

Counter target spell unless its controller pays .

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."

, Sacrifice a permanent: You gain 1 life.

Claws of Wirewood deals 3 damage to each creature with flying and each player.

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

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

When Clay Champion enters, 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 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.)

Creatures you control gain double strike until end of turn. (They deal both first-strike and regular combat damage.)

Flying, trample

Pay 3 life: Return Cleaving Reaper from your graveyard to your hand. Activate only if you had an Angel or Berserker enter the battlefield under your control this turn.

Sliver creatures you control get +2/+0.

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.

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.

Whenever Cleric of Chill Depths blocks a creature, that creature doesn't untap during its controller's next untap step.

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.)

Flying

Whenever you gain life, each opponent loses 1 life.

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

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.)

Enchant creature

Enchanted creature gets -4/-1.

Flying

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

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.