This spell can't be countered.
Destroy target nonland permanent with mana value 3 or less.

Return target artifact, enchantment, or land to its owner's hand.

Equipped creature can't attack, block, or transform, and its activated abilities can't be activated.
Shackle (: Attach to target creature you don't control. Shackle only as a sorcery.)

This creature gets +1/+0 for each other Rat you control.
A deck can have any number of cards named Rat Colony.

Sinecure (This creature can occupy a space two spaces higher on the Monk Track than its power.)
Once on each of your odd-numbered (beige) production phases, you may spend two additional sheep when constructing a building. If you do, you may activate the lesser production ability of any building of prestige 5 or lower you control. Exceptions: Apiary, Cobbler (but not Shoemaker), Wainwright.

: Surveil 1.
: Target permanent card in a graveyard becomes a 0/0 black Germ creature in addition to its other colors and types until end of turn. (This effect ends if it leaves the graveyard.)

Equipped creature gets +1/+2.
Equip
Whenever a 1/1 creature you control enters, you may return this card from your graveyard to the battlefield, then attach it to that creature.

Creatures entering don't cause abilities to trigger.

Enchant creature you control
When Penumbra Umbra is put into a graveyard from the battlefield, create a token that's a copy of enchanted creature, except the token is black.
Umbra armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)

All creatures lose flying until end of turn.
Sacrifice a snow land: Return this card from your graveyard to your hand.

: Add one mana of any color in your commander's color identity.

Flash
Flying
When this creature enters, draw a card.
This creature has deathtouch as long as you control at least three other snow permanents.

Whenever an opponent casts a spell, you may reveal the top card of your library. If you do, counter that spell if it has the same mana value as the revealed card.

You may cast an instant or sorcery spell from your sideboard. If you cast a modal spell this way, you may choose an additional mode. (A modal spell lets you choose one or more modes from a bulleted list.)

When a player casts a spell, sacrifice this enchantment. If you do, each of that player's opponents draws three cards.

Counter target spell.

Search your library for a blue instant card, reveal that card, put it into your hand, then shuffle.

Multicleave (You may pay an additional any number of times as you cast this spell. For each time you do, choose a paired set of square brackets and remove the words in between.)
Destroy target [nonblack] creature [with mana value 3 or less] [an opponent controls]. You [and its controller each] draw a card [and lose 2 life]. Create a [tapped] 1/1 white Spirit creature token with flying.

Look at the top three cards of your library. Put one of them into your hand, put one of them on the bottom of your library, and exile one of them. You may play the exiled card this turn.

Draw four cards, then discard three cards at random.

This artifact enters with three wish counters on it.
, , Remove a wish counter from this artifact: Search your library for a card, put it into your hand, then shuffle. An opponent gains control of this artifact. Activate only during your turn.

Exile this creature from your hand: Add .

(You have to pay to play this land as your land drop. It's green.)
When Glade of the Pump Spells enters the battlefield, up to one target creature gets +2/+2 and gains trample until end of turn.
: Add .

+1: You may discard a card. If you do, draw a card.
+1: Add two mana in any combination of colors. Spend this mana only to cast Dragon spells.
−7: Create four 5/5 red Dragon creature tokens with flying.

When this creature enters, exile up to one target nonland, nontoken permanent you don't control with mana value 4 or less.
When this creature leaves the battlefield, the exiled card's owner creates an X/X blue Illusion creature token, where X is the mana value of the exiled card.

You may play a card you own from outside the game this turn.

Each opponent can't draw more than one card each turn.
−2: Look at the top four cards of your library. You may reveal a noncreature, nonland card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

As an additional cost to cast this spell, discard a card.

+2: Each player draws a card.
−1: Target player draws a card.
−10: Target player mills twenty cards.

Haste
Whenever Toralf's Disciple attacks, conjure four cards named Lightning Bolt into your library, then shuffle.

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay ."

: Add .
Any time you could mulligan and this card is in your hand, you may exile all the cards from your hand, then draw that many cards. (You can do this in addition to taking mulligans.)

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Haste (This creature can attack and as soon as it comes under your control.)
At the beginning of the end step, sacrifice this creature.

Tap all lands target player controls and that player loses all unspent mana.

Put a random creature from a random graveyard into play under your control. Call from the Grave deals to you an amount of damage equal to that creature's casting cost.