Counter target spell unless its controller pays , where X is the number of words in the name with the most words among permanents you control.

Menace (This creature can't be blocked except by two or more creatures.)

Tunnel Snakes Rule — Whenever Butch DeLoria, Tunnel Snake attacks, it gets +1/+1 until end of turn for each other Rogue and/or Snake you control.

: Put a menace counter on another target creature. It becomes a Rogue in addition to its other types.

Target creature gets +3/+0 and gains lifelink until end of turn. Regenerate it. (Damage dealt by a creature with lifelink also causes its controller to gain that much life.)

, Remove a counter from a permanent you control: Create a 1/1 colorless Gnome artifact creature token.

, Sacrifice an artifact: Choose any kind of counter a printed card refers to, then put one of that counter on target permanent.

Descend 8 — When you cast this spell, if there are eight or more permanent cards in your graveyard, copy this spell twice. You may choose new targets for the copies.

Return target permanent card from your graveyard to your hand. Exile Bygone Marvels.

Threshold — , , Exile two cards from your graveyard: Target player discards a card. Activate only as a sorcery and only if seven or more cards are in your graveyard.

Whenever a Goblin deals combat damage to a player, that player discards a card.

, , Exile two cards from your graveyard: Return target creature card from your graveyard to your hand.

At the beginning of your upkeep, look at the top card of your library. If it's a creature or planeswalker card, you may reveal it and put it into your hand. If you don't put the card into your hand, you may put it on the bottom of your library.

At the beginning of your upkeep, return a permanent you control to its owner's hand.

Cackling Flames deals 3 damage to any target.

Hellbent — Cackling Flames deals 5 damage instead if you have no cards in hand.

Whenever Cacophony Scamp deals combat damage to a player, you may sacrifice it. If you do, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

When Cacophony Scamp dies, it deals damage equal to its power to any target.

Cactus Preserve enters tapped.

: Add one mana of any type that a land you control could produce.

: Until end of turn, Cactus Preserve becomes an X/X green Plant creature with reach, where X is the greatest mana value among your commanders. It's still a land.

Exile a card from your hand: Add or .

Trample

Whenever Cadira, Caller of the Small deals combat damage to a player, for each token you control, create a 1/1 white Rabbit creature token.

Equipped creature has lifelink.

As long as you have 30 or more life, equipped creature gets +5/+5 and has indestructible and "Prevent all damage that would be dealt to this creature."

Equip

Noncreature spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting a noncreature spell pays for or one mana of that creature's color.)

At the beginning of your end step, untap up to four target creatures.

As Caged Sun enters, choose a color.

Creatures you control of the chosen color get +1/+1.

Whenever a land's ability causes you to add one or more mana of the chosen color, add one additional mana of that color.

Return up to two target creatures to their owners' hands. Draw two cards, then discard a card.

As an additional cost to cast this spell, reveal a colorless creature card from your hand.

Exile each creature and planeswalker with mana value less than the revealed card's mana value.

: Add .

, : Put a storage counter on Calciform Pools.

, Remove X storage counters from Calciform Pools: Add X mana in any combination of and/or .

Counter target spell unless its controller pays .

Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, scry 2. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Reveal cards from the top of your library until you reveal a nonland card. Put the revealed cards on the bottom of your library in a random order. When you reveal a nonland card this way, Calibrated Blast deals damage equal to that card's mana value to any target.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

+1: Look at the top four cards of your library. You may reveal an enchantment card from among them and put that card into your hand. Put the rest on the bottom of your library in a random order.

−3: Exile target creature or enchantment you don't control until target enchantment you control leaves the battlefield.

−7: Return all enchantment cards from your graveyard to the battlefield.

Cascade, cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order. Then do it again.)

Call Forth the Tempest deals damage to each creature your opponents control equal to the total mana value of other spells you've cast this turn.

Players can't gain life this turn. Damage can't be prevented this turn. Call In a Professional deals 3 damage to any target. (Shield counters don't prevent this damage as they're removed.)

Devoid (This card has no color.)

Create two 1/1 colorless Eldrazi Scion creature tokens. They have "Sacrifice this creature: Add ."

As Call to Arms enters, choose a color and an opponent.

White creatures get +1/+1 as long as the chosen color is the most common color among nontoken permanents the chosen player controls but isn't tied for most common.

When the chosen color isn't the most common color among nontoken permanents the chosen player controls or is tied for most common, sacrifice Call to Arms.

Create three 1/1 white Vampire creature tokens with lifelink.

, : Target creature gains flying until end of turn.

When Callous Bloodmage enters, choose one —

• Create a 1/1 black and green Pest creature token with "When this creature dies, you gain 1 life."

• You draw a card and you lose 1 life.

• Exile target player's graveyard.

Return target nonland permanent to its owner's hand.

Amass Zombies 1. (Put a +1/+1 counter on an Army you control. It's also a Zombie. If you don't control an Army, create a 0/0 black Zombie Army creature token first.)

You may choose not to untap Callous Oppressor during your untap step.

As Callous Oppressor enters, an opponent chooses a creature type.

: Gain control of target creature that isn't of the chosen type for as long as Callous Oppressor remains tapped.

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Callow Jushi.

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

Whenever a creature attacks, Caltrops deals 1 damage to it.

When this creature enters, you may search your library for a basic land card, reveal it, then shuffle and put that card on top.

, : Untap X target lands.

Commander creatures you own have "When this creature enters or leaves the battlefield, draw a card."

, : Reveal the top card of your library. If it has the same name as a card in your graveyard, put it into your graveyard. Otherwise, draw a card.

If was spent to cast this spell, you may have target creature get -3/-3 until end of turn. If was spent to cast this spell, you may have target creature get +3/+3 until end of turn. (Do both if was spent.)

Flying

Fabricator Claw Array — Whenever another nontoken artifact creature or Vehicle you control enters, draw a card.

Target creature loses flying until end of turn.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Canopy Stalker must be blocked if able.

When Canopy Stalker dies, you gain 1 life for each creature that died this turn.

(: Add or .)

Canopy Vista enters tapped unless you control two or more basic lands.

Return target creature card with mana value 3 or less from your graveyard to the battlefield. It gains "If this creature would die, exile it instead."

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Whenever Caparocti Sunborn attacks, you may tap two untapped artifacts and/or creatures you control. If you do, discover 3. (Exile cards from the top of your library until you exile a nonland card with mana value 3 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Enchant creature

Enchanted creature gets +1/+1.

, Sacrifice Capashen Standard: Draw a card.

, , Sacrifice Capashen Unicorn: Destroy target artifact or enchantment.

target creature gets -x/-x until end of turn, where x is the number of times a capital letter appears in its rules text. (ignore reminder text and flavor text.)