Whenever you scry, the next instant or sorcery spell you cast this turn costs less to cast, where X is the number of cards looked at while scrying this way.
+2: Draw a card, then scry 2.
−3: Exile the top card of your library. Create a number of 1/1 blue Faerie Dragon creature tokens with flying equal to that card's mana value.
Elminster can be your commander.

This land enters tapped.
: Add .
Station (Tap another creature you control: Put charge counters equal to its power on this Planet. Station only as a sorcery.)
12+ | , , Sacrifice a land: Create a 2/2 colorless Robot artifact creature token, then creatures you control get +1/+0 and gain haste until end of turn.

+1: Add . Chandra deals 1 damage to up to one target player or planeswalker.
+1: Exile the top card of your library. If it's red, you may cast it this turn.
−7: Exile the top five cards of your library. You may cast red spells from among them this turn. You get an emblem with "Whenever you cast a red spell, this emblem deals X damage to any target, where X is the amount of mana spent to cast that spell."

, : Scry 1. Put a landmark counter on this artifact. Then if there are three or more landmark counters on it, remove those counters, transform this artifact, and create three Treasure tokens. (They're artifacts with ", Sacrifice this token: Add one mana of any color.")

Trample
Whenever you attack, choose one —
• Create a tapped and attacking X/X green Dinosaur creature token with trample, where X is the greatest power among other attacking creatures.
• Create X 1/1 white Vampire creature tokens with lifelink, where X is the number of other attacking creatures.

When this artifact enters, search your library for five cards, exile them in a face-down pile, and shuffle that pile. Then shuffle your library.
: The next time you would draw a card this turn, instead put the top card of the exiled pile into its owner's hand.

Target player mills ten cards.

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.

Whenever a Sliver deals combat damage to a creature, destroy that creature. It can't be regenerated.

(: Add .)

Cast this spell only if an opponent cast a creature spell this turn.
You may put a green creature card from your hand onto the battlefield.

Add for each tapped land your opponents control.

When Heliod enters, return target enchantment card that isn't a God from your graveyard to your hand.
: Transform Heliod. Activate only as a sorcery. ( can be paid with either or 2 life.)

Devoid (This card has no color.)
Return target nonland permanent you don't control to its owner's hand.
Whenever you cast a colorless spell with mana value 7 or greater, you may exile this card from your graveyard. When you do, return each nonland permanent you don't control to its owner's hand.

As this enchantment enters, choose white-bordered or silver-bordered.
Whenever a creature you control with the chosen border enters, draw a card.

Whenever a nontoken, non-Angel creature you control dies, return that card to the battlefield under its owner's control with a +1/+1 counter on it. It has flying and is an Angel in addition to its other types.

Create X 1/1 black Rat creature tokens with "This token can't block." Creatures you control gain haste until end of turn.

Whenever this creature or another creature dies, target player loses 1 life and you gain 1 life.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

The first spell you cast from anywhere other than your hand each turn has demonstrate. (When you cast that spell, you may copy it. If you do, choose an opponent to also copy it. A copy of a permanent spell becomes a token.)
Whenever you copy a spell, put a +1/+1 counter on The Twelfth Doctor.