mtg.wtf

{T}: Add {C}.
{T}, Sacrifice Command Beacon: Put your commander into your hand from the command zone.

{T}: Add one mana of any color in your commander's color identity.

Commercial District enters the battlefield tapped.
When Commercial District enters the battlefield, surveil 1.

When this creature transforms into Compleated Conjurer, exile the top card of your library. Until the end of your next turn, you may play that card.

Concealed Courtyard enters the battlefield tapped unless you control two or fewer other lands.
{T}: Add {W} or {B}.

Visit — Create a Food token.

When Conduit Pylons enters the battlefield, surveil 1.
{T}: Add {C}.
{1}, {T}: Add one mana of any color.

Whenever Conduit of Emrakul attacks, add {C}{C} at the beginning of your next main phase this turn.

{T}: Add {C}.
{2}, {T}: Draw a card, then discard a card.
{4}, {T}: Draw a card.
{6}, {T}: Return target card from your graveyard to your hand.

Conservatory enters the battlefield tapped.
{T}: Add {G} or {W}.
{4}, {T}: Investigate.

Whenever a Minotaur attacks this turn, it gets +2/+0 until end of turn. Destroy that creature at end of combat.

At the beginning of your upkeep, each opponent loses 1 life and you gain 1 life.

Contaminated Aquifer enters the battlefield tapped.

{T}: Add {C}.
{R}{G}, {T}: Target Beast creature you control fights target creature an opponent controls.

Whenever a creature deals combat damage to you, that creature's controller gains control of Contested War Zone.
{T}: Add {C}.
{1}, {T}: Attacking creatures get +1/+0 until end of turn.

{TK}{TK} — {T}: Target creature gains haste until end of turn.
{TK}{TK}{TK}{TK} — Deathtouch, lifelink
{TK}{TK} — 5/1
{TK}{TK}{TK} — 3/5

{TK}{TK} — When this permanent leaves the battlefield, draw a card.
{TK}{TK}{TK}{TK}{TK} — Whenever a creature enters the battlefield under your control, this permanent becomes a 13/13 Eldrazi creature in addition to its other types until end of turn.
{TK}{TK} — 4/2
{TK}{TK}{TK}{TK} — 5/6

Copperline Gorge enters the battlefield tapped unless you control two or fewer other lands.
{T}: Add {R} or {G}.

Coral Atoll enters the battlefield tapped.
When Coral Atoll enters the battlefield, sacrifice it unless you return an untapped Island you control to its owner's hand.
{T}: Add {C}{U}.

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

{1}{R}, {T}: Choose an exiled card used to craft Cosmium Catalyst at random. You may cast that card without paying its mana cost.

When Cosmium Kiln enters the battlefield, create two 1/1 colorless Gnome artifact creature tokens.
Creatures you control get +1/+1.

Visit — You may put a sticker on a nonland permanent you own.

Visit — Drop three cards you own from outside the game one at a time onto the playing area from a height of at least one foot (about 0.3 meters). If those cards completely cover Cover the Spot, claim the prize!
Prize — You get {TK}{TK}{TK}{TK}, then you may put a sticker on a nonland permanent you own. Sacrifice Cover the Spot, then open an Attraction.

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