Extort (Whenever you cast a spell, you may pay . If you do, each opponent loses 1 life and you gain that much life.)

Whenever you tap a Swamp for mana, add an additional .

When Crypt Lurker enters, you may sacrifice a creature or discard a creature card. If you do, draw a card.

When Crypt of the Eternals enters, you gain 1 life.

: Add .

, : Add , , or .

Haste

: Crypt Ripper gets +1/+1 until end of turn.

Trample

Cryptborn Horror enters with X +1/+1 counters on it, where X is the total life lost by your opponents this turn.

, : Choose another target artifact creature you control. When that creature dies this turn, return it to the battlefield tapped under your control.

When Cryptic Annelid enters, scry 1, then scry 2, then scry 3. (To scry X, look at the top X cards of your library, then put any number of them on the bottom and the rest on top in any order.)

When Cryptic Coat enters, cloak the top card of your library, then attach Cryptic Coat to it. (To cloak a card, put it onto the battlefield face down as a 2/2 creature with ward . Turn it face up any time for its mana cost if it's a creature card.)

Equipped creature gets +1/+0 and can't be blocked.

: Return Cryptic Coat to its owner's hand.

Devoid (This card has no color.)

, Put a card an opponent owns from exile into that player's graveyard: Tap target creature.

Whenever you cast an instant or sorcery spell from your hand, manifest the top card of your library. (Put that card 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.)

Whenever a face-down creature you control dies, exile it if it's an instant or sorcery card. You may cast that card until the end of your next turn.

As you create your deck, circle two of the colors below.

Cryptic Spires enters tapped.

: Add one mana of either of the circled colors.

Vigilance

Whenever a face-down permanent you control enters and whenever Cryptid Inspector or another permanent you control is turned face up, put a +1/+1 counter on Cryptid Inspector.

Creatures you control have ": Add one mana of any color."

Protector — Other artifact creatures you control have hexproof.

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

Defender (This creature can't attack.)

You have hexproof. (You can't be the target of spells or abilities your opponents control.)

Prevent all noncombat damage that would be dealt to other creatures you control.

, , Sacrifice Crystal Chimes: Return all enchantment cards from your graveyard to your hand.

At the beginning of your end step, Crystal Golem phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before you untap during your next untap step.)

: Add .

, : Add .

When Crystal Seer enters, look at the top four cards of your library, then put them back in any order.

: Return Crystal Seer to its owner's hand.

You may look at the top card of your library any time.

You may play historic lands and cast historic spells from the top of your library. (Artifacts, legendaries, and Sagas are historic.)

: Add .

Change the text of target spell or permanent by replacing all instances of one color word with another or one basic land type with another until end of turn.

Draw a card.

Converge — Crystalline Crawler enters with a +1/+1 counter on it for each color of mana spent to cast it.

Remove a +1/+1 counter from Crystalline Crawler: Add one mana of any color.

: Put a +1/+1 counter on Crystalline Crawler.

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)

When Crystalline Nautilus becomes the target of a spell or ability, sacrifice it.

Enchanted creature gets +4/+4 and has "When this creature becomes the target of a spell or ability, sacrifice it."

All Slivers have shroud. (They can't be the targets of spells or abilities.)

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.)

Lifelink

Whenever this creature mutates, create two 1/1 white Cat creature tokens with lifelink.

, Sacrifice a creature: Put a charge counter on Culling Dais.

, Sacrifice Culling Dais: Draw a card for each charge counter on Culling Dais.

Target creature blocks this turn if able.

At the beginning of your upkeep, destroy target nonland permanent with the lowest mana value. (If two or more permanents are tied for lowest, target any one of them.)

As an additional cost to cast this spell, sacrifice a creature.

Add .

Cult Conscript enters tapped.

: Return Cult Conscript from your graveyard to the battlefield. Activate only if a non-Skeleton creature died under your control this turn.

Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, Cult Healer gains lifelink until end of turn.

Whenever a permanent you control transforms into a non-Human creature, create a 2/2 green Wolf creature token.

Commander creatures you own get +3/+3 and have flying, deathtouch, "Ward—Pay 3 life," and "At the beginning of your upkeep, sacrifice a creature."

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Devoid (This card has no color.)

: Add . Spend this mana only to cast a colorless spell, activate an ability of a colorless permanent, or pay a cost that contains . ( represents colorless mana.)

: Add one mana of any color.

Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.)

When Culvert Ambusher enters or is turned face up, target creature blocks this turn if able.

Disguise (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)

Enchant creature

Enchanted creature gets +3/+3.

When enchanted creature attacks or blocks, sacrifice Cunning at the beginning of the next cleanup step.

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Cunning Bandit.

At the beginning of the end step, if there are two or more ki counters on Cunning Bandit, you may flip it.

Haste

When Cunning Coyote enters, another target creature you control gets +1/+1 and gains haste until end of turn.

Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

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

When Cunning Geysermage enters, if it was kicked, return up to one other target creature to its owner's hand.

At the beginning of your upkeep, each player discards a card.

Whenever an opponent attacks you and/or one or more planeswalkers you control, exile the top card of that player's library. You may play that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast it.

Cunning Strike deals 2 damage to target creature and 2 damage to target player or planeswalker.

Draw a card.

You may reveal an instant card you own from outside the game and put it into your hand. Exile Cunning Wish.

Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Draw a card.

This spell can't be countered.

Flying

When this creature enters, look at the top five cards of your library and separate them into a face-down pile and a face-up pile. An opponent chooses one of those piles. Put that pile into your hand and the other into your graveyard.

Whenever you discover, discover again for the same value. This ability triggers only once each turn.

Each player returns a creature they control to its owner's hand.