If it's neither day nor night, it becomes day as Component Collector enters the battlefield.

Whenever day becomes night or night becomes day, you may tap or untap target nonland permanent.

Constellation — Whenever an enchantment enters the battlefield under your control, you may put a land card from your hand onto the battlefield tapped. If you control six or more enchantments, instead you may put a creature or land card from your hand onto the battlefield tapped.

Whenever a black card is put into an opponent's graveyard from anywhere, you may draw a card.

, Discard a card: Draw a card.

, Sacrifice Compulsion: Draw a card.

Enchant creature

Enchanted creature can't attack or block.

Enchanted creature has ", Sacrifice this creature: You gain 2 life."

Equipped creature gets +3/+0.

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.)

When Concealed Weapon is turned face up, attach it to target creature you control.

Equip

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.)

When Conclave Phalanx enters the battlefield, you gain 1 life for each creature you control.

Flying

When Conduit Pylons enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

: Add .

, : Add one mana of any color.

Choose target artifact or creature. You get (four energy counters), then you may pay an amount of equal to that permanent's mana value. If you do, gain control of it.

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

Create six 1/1 white Kor Soldier creature tokens. If this spell was kicked, create twelve of those tokens instead.

Flying

Whenever an opponent draws a card, you may draw two cards.

Play with the top card of your library revealed.

You may cast Goblin spells from the top of your library.

As long as the top card of your library is a Goblin card, Conspicuous Snoop has all activated abilities of that card.

Whenever Conspiracy Theorist attacks, you may pay and discard a card. If you do, draw a card.

Whenever you discard one or more nonland cards, you may exile one of them from your graveyard. If you do, you may cast it this turn.

Spend only black mana on X.

Consume Spirit deals X damage to any target and you gain X life.

Target player sacrifices a creature. You gain life equal to that creature's toughness.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Roll a d20.

1–9 | Draw two cards.

10–19 | Scry 2, then draw two cards.

20 | Scry 3, then draw three cards.

Flash

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

Enchant creature

When enchanted creature attacks, return it and Contempt to their owners' hands at end of combat.

Surveil 5. (Look at the top five cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Lifelink

Whenever an artifact enters the battlefield under your control, scry 1.

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.)

Enchant creature

Enchanted creature can't attack or block.

: Exile enchanted creature.

Enchant creature

Enchanted creature has banding. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding a player controls are blocking or being blocked by a creature, that player divides that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

, Sacrifice Copper Gnomes: You may put an artifact card from your hand onto the battlefield.

Reach

, Sacrifice Copper Longlegs: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

At the beginning of each player's upkeep, Copper Tablet deals 1 damage to that player.

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.

You may have Copy Artifact enter the battlefield as a copy of any artifact on the battlefield, except it's an enchantment in addition to its other types.

You may have Copy Enchantment enter the battlefield as a copy of any enchantment on the battlefield.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

When Core Prowler dies, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Target creature you control gains myriad until end of turn. (Whenever it attacks, for each opponent other than defending player, you may create a token that's a copy of that creature that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

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.

Mill three cards, then you may return a creature card from your graveyard to your hand. (To mill three cards, put the top three cards of your library into your 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.)

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)

Return the top creature card of your graveyard to the battlefield. That creature gains haste until end of turn. Exile it at the beginning of the next end step.

, , 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.

, Sacrifice a creature: Target opponent reveals their hand. You choose a card from it. That player discards that card. Activate only as a sorcery.

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.

, Exile one or more creature cards from your graveyard: Create a tapped X/X black Zombie Horror creature token, where X is twice the number of cards exiled this way.

Corrupt deals damage to any target equal to the number of Swamps you control. You gain life equal to the damage dealt this way.

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

Enchant creature

You control enchanted creature.

Enchanted creature has infect. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

: Add . ( represents colorless mana.)

, Pay 1 life: Add one mana of any color. Spend this mana only to cast a spell with devoid.

, Sacrifice a creature: Regenerate Corrupted Harvester.

Counter target spell if its controller is poisoned.

Enchant land

Enchanted land is a 3/3 black Ooze creature. It's still a land.

When enchanted land dies, return that card to its owner's hand.

When Corruption of Towashi enters the battlefield, incubate 4. (Create an Incubator token with four +1/+1 counters on it and ": Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

Whenever a permanent you control transforms or a permanent enters the battlefield under your control transformed, you may draw a card. Do this only once each turn.