mtg.wtf

Mutate {4}{B}
Whenever this creature mutates, each opponent sacrifices a creature.

As long as Chittering Illuminator is at the top of your library, you may look at it any time and you may cast it.
As long as the top card of your library is a creature card, you may look at it any time and you may cast it.

{1}{W}{W}, {T}, Discard a card: The next time a source of your choice would deal damage to you this turn, prevent that damage. You gain life equal to the damage prevented this way.

Forestwalk
As an additional cost to cast creature spells, you may pay any amount of mana. If you do, that creature enters with that many additional +1/+1 counters on it.

Flash
This spell can't be countered.
Flying
Discard a card: Until end of turn, Chromium, the Mutable becomes a Human with base power and toughness 1/1, loses all abilities, and gains hexproof. It can't be blocked this turn.

{0}: Chronatog gets +3/+3 until end of turn. You skip your next turn. Activate only once each turn.

When Chronicler of Heroes enters, draw a card if you control a creature with a +1/+1 counter on it.

When Chronobot enters, switch upkeep steps with target opponent for as long as it remains on the battlefield. (You take your upkeep on their turn, and they take their upkeep on your turn.)

{1}, {T}: Put a +1/+1 counter on Chronomaton.

{R}: Cinder Crawler gets +1/+0 until end of turn. Activate only if Cinder Crawler is blocked.

Other Food creatures you control have horsemanship. (They can't be blocked except by creatures with horsemanship.)
At the beginning of your combat step, you may put a +1/+1 counter on target noncreature Food you control. If you do, it becomes a 0/0 Knight creature in addition to its other types.
{2}, {T}, Sacrifice Cinnamon, Seasoned Steed: You gain 3 life.

Flying
Cipherbound Spirit can block only creatures with flying.
{3}{U}: Draw two cards, then discard a card.

Vigilance
Formidable — {T}: Add {C}{C}{C}. Activate only if creatures you control have total power 8 or greater.

When Circuit Mender enters, you gain 2 life.
When Circuit Mender leaves the battlefield, draw a card.

When Circuit Mender enters, you gain 3 life.
When Circuit Mender leaves the battlefield, draw a card.

{1}, {T}, Sacrifice another creature: Draw a card, then create a Food token.

Vigilance
Renown 2

{T}, Tap an untapped artifact or creature you control: Add one mana of any color.

Trample
When you cast this spell and whenever Cityscape Leveler attacks, destroy up to one target nonland permanent. Its controller creates a tapped Powerstone token.
Unearth {8}

Whenever Civic Gardener attacks, untap target creature or land.

{G}, {T}: Target creature gets +0/+1 until end of turn.
{U}, {T}: Put target creature you control on top of its owner's library.

Vigilance
When Claim Jumper enters, if an opponent controls more lands than you, you may search your library for a Plains card and put it onto the battlefield tapped. Then if an opponent controls more lands than you, repeat this process once. If you search your library this way, shuffle.

Whenever Clambassadors deals damage to a player, choose an artifact, creature, or land you control. That player gains control of that permanent.

{1}{R}, {T}: Target creature can't block this turn.
{2}{G}, {T}: Target land you control becomes a 4/4 Elemental creature with haste until end of turn. It's still a land.

Impossible Girl — If Clara Oswald is your commander, choose a color before the game begins. Clara Oswald is the chosen color.
If a triggered ability of a Doctor you control triggers, that ability triggers an additional time.
Doctor's companion