Flash
Enchant creature
Enchanted creature gets +2/+1 and has tantrum. (It's like trample but for blocking.)

Activated abilities of artifacts can't be activated.

Legacy (During deckbuilding, circle any number of the following. You can spend 1 point for free. For every 2 points spent beyond that, increase this card's mana cost by .)
1 point each → Flash; deathtouch; reach; vigilance; or ward
2 points → : Add one mana of any color.
3 points each → +1/+1; or +0/+2
4 points → When this creature enters the battlefield, draw a card.

At the beginning of your upkeep, destroy all artifacts and enchantments. They can't be regenerated.

When this creature enters, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on top of your library and the rest on the bottom of your library in a random order. If X is greater than or equal to the number of cards in your library, you win the game. (Each in the mana costs of permanents you control counts toward your devotion to blue.)

Choose one or both —
• Put a base power 4 counter on target creature.
• Put a base toughness 4 counter on target creature.

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

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.)

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.)

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.)

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

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.)

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.

When this artifact enters, draw a card.
Each land with an activated ability that isn't a mana ability doesn't untap during its controller's untap step.

Vigilance
As long as you are way behind, Knight of Lost Causes gets +3/+3 and has indestructible. (You are way behind if, at any point during this turn, an opponent had 10 or more life than you, controlled at least three more creatures than you, or had at least three more cards in hand than you.)

Each player who has cast a nonartifact spell this turn can't cast additional nonartifact spells.

Flying
Any time you could mulligan and No-Regrets Egret is in your hand, you may reveal No-Regrets Egret. If you do, look at the top two cards of your library. (Put those cards back in the same order. You can still mulligan.)

All Cats you control are Dogs in addition to their other types.
All Dogs you control are Cats in addition to their other types.
Cats and Dogs you control have haste.

Cast this spell only during your turn.
Take an extra turn after this one if an opponent cast a blue spell this turn.

Equipped creature has flying.
Equip
Equipment swap (: Exchange this Equipment with an Equipment card in your hand. If this Equipment was attached to a creature, attach the new Equipment to that creature.)

When this enchantment enters, exile all graveyards.
If a card or token would be put into a graveyard from anywhere, exile it instead.

Destroy target artifact, enchantment, emblem, or gameplay tracker. (Trackers include play aids such as dungeons, city's blessing, and monarch. When you destroy it, the associated object or designation is removed from the game.)

: Choose a creature type other than Wall. Target creature becomes that type until end of turn.

Whenever a spell you control causes you to gain card advantage, each opponent loses 2 life. (You gain card advantage each time a spell you control resolves and you end up having more cards relative to your opponents than before that spell resolved. Divination, Annihilate, and Wrath of God can all be card advantage. And remember: tokens aren't cards!)

You may draw cards from anywhere in your library. (You don't get to look at them or reorder them while doing so.)
When Heart of a Duelist enters the battlefield, draw a card.

If a player would draw a card except the first one they draw in each of their draw steps, that player discards a card instead. If the player discards a card this way, they draw a card. If the player doesn't discard a card this way, they mill a card.

Exile target creature if it has any abilities other than keywords. (Flying, protection, and partner are all keywords. See rule 702 for details. Landfall and scry aren't keywords; they're an ability word and a keyword action respectively. Yes, there's a difference.)

If this spell is the first spell you've cast this game, you may cast it without paying its mana cost.
Look at the top five cards of your library. You may reveal a creature or land card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Each player can't draw more than one card each turn.

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.

Flying
Each player can't cast more than one spell each turn.
Nonbasic lands your opponents control enter tapped.

Banding (Just ask around until you find someone who knows.)
Creature spells you cast with banding cost less to cast.
Whenever two or more creatures you control attack in a band, each creature in that band gets +1/+1 until end of turn for each creature in that band.

Each opponent can cast spells only any time they could cast a sorcery.
+1: Until your next turn, you may cast sorcery spells as though they had flash.
−3: Return up to one target artifact, creature, or enchantment to its owner's hand. Draw a card.

Each player loses a third of their life, then discards a third of the cards in their hand, then sacrifices a third of the creatures they control of their choice, then sacrifices a third of the lands they control of their choice. Round up each time.