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.

Flying

You have no maximum hand size.

Whenever a creature token you control deals combat damage to a player, draw a card.

Flying

When you sacrifice a Clue, return Curious Cadaver from your graveyard to your hand.

Choose target opponent. You create X 3/3 green Beast creature tokens, where X is the number of artifacts that player controls.

Enchant creature

Enchanted creature gets +1/+1 and has "Whenever this creature deals combat damage to a player, investigate." (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Enchant creature

Enchanted creature gets +1/+1 and has "Whenever this creature deals combat damage to a player, you may draw a card."

At the beginning of your end step, if you didn't attack with a creature this turn, sacrifice Curious Obsession.

Whenever you discard a card, you may exile that card from your graveyard.

, : Draw a card, then discard a card.

: Put a card exiled with Currency Converter into your graveyard. If it's a land card, create a Treasure token. If it's a nonland card, create a 2/2 black Rogue creature token.

Enchant artifact

At the beginning of the upkeep of enchanted artifact's controller, Curse Artifact deals 2 damage to that player unless they sacrifice that artifact.

Enchant player

Whenever enchanted player is attacked, untap all nonland permanents you control. Each opponent attacking that player untaps all nonland permanents they control.

Enchant player

Whenever a player attacks enchanted player with one or more creatures, that attacking player may discard a card. If the player does, they draw a card.

Enchant player

Nonlegendary creatures enchanted player controls have base power and toughness 3/3 and lose all creature types.

Enchant player

Whenever enchanted player is attacked, create a 2/2 black Zombie creature token. Each opponent attacking that player does the same.

Enchant player

Enchanted player can't cast more than one spell each turn.

Enchant player

Creatures attacking enchanted player have trample.

Whenever a creature deals combat damage to enchanted player, that player exiles the top card of their library. Until end of turn, that creature's controller may play that card and they may spend mana as though it were mana of any color to cast that spell.

Enchant player

As this permanent transforms into Curse of Leeches, attach it to a player.

At the beginning of enchanted player's upkeep, they lose 1 life and you gain 1 life.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Enchant player

At the beginning of your upkeep, you may search your library for a Curse card that doesn't have the same name as a Curse attached to enchanted player, put it onto the battlefield attached to that player, then shuffle.

Enchant player

At the beginning of enchanted player's draw step, that player draws two additional cards.

At the beginning of enchanted player's end step, that player discards their hand.

Enchant player

Whenever a creature attacks enchanted player, put a +1/+1 counter on it.

Enchant player

Whenever a player attacks enchanted player with one or more creatures, that attacking player may create a tapped 2/2 black Zombie creature token.

Enchant player

Whenever a creature deals combat damage to enchanted player, put a +1/+1 counter on that creature.

Enchant player

At the beginning of enchanted player's upkeep, that player mills two cards.