Look at the top six cards of your library. Put up to two creature cards with mana value 3 or less from among them onto the battlefield. Put the rest on the bottom of your library in any order.

When Urza enters, create a 0/0 colorless Construct artifact creature token with "This token gets +1/+1 for each artifact you control."
Tap an untapped artifact you control: Add .
: Shuffle your library, then exile the top card. Until end of turn, you may play that card without paying its mana cost.

Shroud (This creature can't be the target of spells or abilities.)
Glimpse, the Unthinkable can't be chosen.
The name Glimpse, the Unthinkable can't be chosen.

When this creature enters, destroy target land.

Enchant creature you control
Enchanted creature is a planeswalker in addition to its other types. Its toughness becomes its loyalty. (You change its toughness to activate loyalty abilities. Damage lowers toughness. Toughness doesn't heal at end of turn.) It can't block and gains the following abilities —
+1: Add .
−1: Exile the top card of your library. You may play it this turn.
−X: This planeswalker deals X damage to any target.

Flash
Creature cards you own that aren't on the battlefield have flash.
Each opponent can cast spells only any time they could cast a sorcery.

Karn's power and toughness are each equal to the greatest mana value among artifacts you control.
At the beginning of your upkeep, add for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.

+1: Draw a card. At the beginning of the next end step, untap up to two lands.
−3: Put target nonland permanent into its owner's library third from the top.
−8: You get an emblem with "Whenever you draw a card, exile target permanent an opponent controls."

Play with the top card of your library revealed.
You may play lands and cast spells from the top of your library.

Devoid (This card has no color.)
Deworded (This creature counts as having no abilities.)
When you cast this spell, put a primeval counter on target creature. (A creature with a primeval counter loses all abilities and can't gain abilities.)

Whenever Fludge, Gunk Guardian or another Slug, Ooze, Fungus, or Mutant enters the battlefield under your control, each opponent shuffles three Gunk cards into their library. (Gunk is a colorless sorcery card with no mana cost that has cycling .)

Companion — Your starting deck contains no cards with a silver, gold, orange, or purple expansion symbol. (If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.)
When Lutri, Pauper Otter enters the battlefield, discard your hand, then draw three cards.

Destroy two target nonblack creatures unless either one is a color the other isn't. They can't be regenerated.

Nagas and Serpents you control are Snakes. (We'll errata this to be true.)
Snakes you control have daunt, deathtouch, and poisonous 2. (A creature with daunt can't be blocked by creatures with power 2 or less. Whenever a creature with poisonous 2 deals combat damage to a player, that player gets two poison counters.)

When A Girl and Her Dogs enters the battlefield and at the beginning of your upkeep, create a 1/1 white legendary Dog creature token and name it.
Whenever A Girl and Her Dogs attacks, it gets +1/+1 until end of turn for each legendary creature you control.

Flying
When Stone Drake enters the battlefield, choose one —
• Distract — Tap target land. Draw a card.
• Enthrall — Target player discards a card for each spell you've cast this turn.

If an opponent would create one or more tokens, they create half that many of each of those kinds of tokens instead, rounded down.
If an opponent would put one or more counters on a permanent or player, they put half that many of each of those kinds of counters on that permanent or player instead, rounded down.

Flying
Whenever a Dragon you control becomes the target of a spell or ability an opponent controls, destroy target nonland permanent that player controls.

: If this creature is tapped, exile target creature card from a graveyard and untap this creature.

: All creatures gain trample and haste until end of turn.
: Put a +1/+1 counter on target creature.
: Target player gains 5 life.
: Target player draws a card.
: Put target creature card from a graveyard onto the battlefield under its owner's control.

You may return two Islands you control to their owner's hand rather than pay this spell's mana cost.
Draw two cards.

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever a creature dealt damage by this creature this turn dies, put a +1/+1 counter on this creature.

Companion — Your starting deck contains only cards with mana value 3 or greater and land cards. (If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.)
When Keruga enters, draw a card for each other permanent you control with mana value 3 or greater.

First strike, vigilance
Heroic — Whenever you cast a spell that targets Anax and Cymede & Kynaios and Tiro, draw a card. Each player may put a land card from their hand onto the battlefield, then each opponent who didn't draws a card.

Companion — Your starting deck contains at least twenty cards more than the minimum deck size. (If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.)
Flying
When Yorion enters, exile any number of other nonland permanents you own and control. Return those cards to the battlefield at the beginning of the next end step.

Take an extra turn after this one.

Whenever a creature you control enters, put a +1/+1 counter on each creature you control.

This spell costs less to cast for each card you've cycled or discarded this turn.
Cycling (, Discard this card: Draw a card.)

When Titania enters, return target land card from your graveyard to the battlefield.
Whenever a land you control is put into a graveyard from the battlefield, create a 5/3 green Elemental creature token.

The player who wins this game also wins the match. (A player may concede the game at any time. If the game ends while this spell is on the stack, it never resolves.)
Cycling

When Liliana's Other Contract enters the battlefield, you draw three cards and you lose 3 life.
If you would lose the game, instead exile Liliana's Other Contract, then return it to the battlefield transformed under your control.

Reach
When Flavor Disaster enters the battlefield or when it's turned face up, target creature gets +X/+X until end of turn, where X is Flavor Disaster's power.
Negamorph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its negamorph cost and put a -1/-1 counter on it.)

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
Cycling—Pay 2 life. (Pay 2 life, Discard this card: Draw a card.)

You may pay 1 life and exile a black card from your hand rather than pay this spell's mana cost.
Distribute two -2/-1 counters among one or two target creatures.

As Catch of the Day enters the battlefield, choose one for each of the following.
Keyword → Vigilance; ward ; or islandwalk.
Whenever this creature attacks → Scry 2; goad target creature an opponent controls; or tap target creature an opponent controls.
Size → 6/2; 4/4; or 2/6.

Lifelink
Splice onto instant or sorcery (As you cast an instant or sorcery spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's abilities to that spell. It's still an instant or sorcery spell.)