Sliver creatures you control have "When this creature enters the battlefield, you may exile target creature an opponent controls until this creature leaves the battlefield."

First strike

Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)

Whenever Consul's Lieutenant attacks, if it's renowned, other attacking creatures you control get +1/+1 until end of turn.

Consuming Aberration's power and toughness are each equal to the number of cards in your opponents' graveyards.

Whenever you cast a spell, each opponent reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.

Consuming Blob's power is equal to the number of card types among cards in your graveyard and its toughness is equal to that number plus 1.

At the beginning of your end step, create a green Ooze creature token with "This creature's power is equal to the number of card types among cards in your graveyard and its toughness is equal to that number plus 1."

: Target creature gets -1/-1 until end of turn. Put a +1/+1 counter on Consumptive Goo.

When Contagious Vorrac enters the battlefield, look at the top four cards of your library. You may reveal a land card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. If you didn't put a card into your hand this way, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flash

If a nontoken creature would enter the battlefield and it wasn't cast, exile it instead.

Contortionist Troupe enters the battlefield with X +1/+1 counters on it.

Coven — At the beginning of your end step, if you control three or more creatures with different powers, put a +1/+1 counter on target creature you control.

This spell can't be countered.

Shroud

CARDNAME's power and toughness are each equal to the number of turns you've taken this game. (If this is in your deck, please keep track of your turns. This means you, Mark.)

When Converter Beast enters the battlefield, incubate 5. (Create an Incubator token with five +1/+1 counters on it and ": Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

, : Convulsing Licid loses this ability and becomes an Aura enchantment with enchant creature. Attach it to target creature. You may pay to end this effect.

Enchanted creature can't block.

Trample

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

: Add .

Copperhoof Vorrac gets +1/+1 for each untapped permanent your opponents control.

Flying

, Sacrifice X lands: Put X +1/+1 counters on Copper-Leaf Angel.

Defender (This creature can't attack.)

When Coral Barrier enters the battlefield, create a 1/1 blue Squid creature token with islandwalk. (It can't be blocked as long as defending player controls an Island.)

Whenever Coral Fighters attacks and isn't blocked, look at the top card of defending player's library. You may put that card on the bottom of that player's library.

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

When Coral Trickster is turned face up, you may tap or untap target permanent.

Level up (: Put a level counter on this. Level up only as a sorcery.)

LEVEL 2-3

3/3

Flying

LEVEL 4+

4/4

Flying

Other Merfolk creatures you control get +1/+1.

Whenever Cordial Vampire or another creature dies, put a +1/+1 counter on each Vampire you control.

: Put a charge counter on target artifact.

Sacrifice Coretapper: Put two charge counters on target artifact.

When Cornered Crook enters the battlefield, you may sacrifice an artifact. When you do, Cornered Crook deals 3 damage to any target.

When Corpse Augur dies, you draw X cards and you lose X life, where X is the number of creature cards in target player's graveyard.

When Corpse Connoisseur enters the battlefield, you may search your library for a creature card, put that card into your graveyard, then shuffle.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

, , Sacrifice a creature: Search your library for a Zombie card and a Swamp card, reveal them, put them into your hand, then shuffle.

Whenever another creature enters the battlefield under your control, each opponent loses 1 life.

If one or more +1/+1 counters would be put on a creature you control, twice that many +1/+1 counters are put on it instead.

When Corridor Monitor enters the battlefield, untap target artifact or creature you control.

Whenever Corrosive Ooze blocks or becomes blocked by an equipped creature, destroy all Equipment attached to that creature at end of combat.

When Corrupt Eunuchs enters the battlefield, it deals 2 damage to target creature.

, Sacrifice a creature: Regenerate Corrupted Harvester.

When Corsair Captain enters the battlefield, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Other Pirates you control get +1/+1.

At the beginning of your upkeep, you may exile Cosima. If you do, it gains "Whenever a land enters the battlefield under your control, if Cosima is exiled, you may put a voyage counter on it. If you don't, return Cosima to the battlefield with X +1/+1 counters on it and draw X cards, where X is the number of voyage counters on it."

Whenever an opponent shuffles their library, you may put a +1/+1 counter on Cosi's Trickster.

Trample

At the beginning of your upkeep, sacrifice Cosmic Larva unless you sacrifice two lands.

Will of the council — When Council Guardian enters the battlefield, starting with you, each player votes for blue, black, red, or green. Council Guardian gains protection from each color with the most votes or tied for most votes.

Flying

Descend 4 — When Council of Echoes enters the battlefield, if there are four or more permanent cards in your graveyard, return up to one target nonland permanent other than Council of Echoes to its owner's hand.

Revolt — When Countless Gears Renegade enters the battlefield, if a permanent you controlled left the battlefield this turn, create a 1/1 colorless Servo artifact creature token.

When Courageous Outrider enters the battlefield, look at the top four cards of your library. You may reveal a Human card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Flying

When Courier Griffin enters the battlefield, you gain 2 life.

Play with the top card of your library revealed.

You may play lands from the top of your library.

Landfall — Whenever a land enters the battlefield under your control, you gain 1 life.

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Court Cleric gets +1/+1 as long as you control an Ajani planeswalker.

Vigilance

When Court Hussar enters the battlefield, look at the top three cards of your library, then put one of them into your hand and the rest on the bottom of your library in any order.

When Court Hussar enters the battlefield, sacrifice it unless was spent to cast it.

: Target creature attacks this turn if able.

: Target creature blocks this turn if able.

Covert Operative can't be blocked.

Flying

Whenever Coveted Falcon attacks, gain control of target permanent you own but don't control.

Disguise

When Coveted Falcon is turned face up, target opponent gains control of any number of target permanents you control. Draw a card for each one they gained control of this way.

When Covetous Castaway dies, mill three cards. (Put the top three cards of your library into your graveyard.)

Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

Flying, deathtouch

If Covetous Geist would be put into a graveyard from anywhere, exile it instead.

Crabapple Cohort gets +1/+1 as long as you control another green creature.