X can't be 0.
Target spell's controller exiles it with X delay counters on it.
At the beginning of each of that player's upkeeps, if that card is exiled, remove a delay counter from it. If the card has no delay counters on it, the player puts it onto the stack as a copy of the original spell.
As long as an opponent controls a creature with flying not named Escaped Shapeshifter, this creature has flying. The same is true for first strike, trample, and protection from any color.
Flying
Two things are needed to survive the harsh skies of Rath: a thick hide and a thicker skull.
Flying
This creature can't be blocked by blue creatures.
: Target creature becomes blue until end of turn.
Enchant creature
Prevent all combat damage that would be dealt to and dealt by enchanted creature.
"It's hard to hurt anyone when you're as transparent as your motives."
—Ertai, wizard adept
: This creature gains shroud until end of turn. (It can't be the target of spells or abilities.)
During the giant crabs' mating season, Skyshroud nights are filled with the clatter of their skirmishes.
"So like men are they: a hardened shell with fragile flesh beneath."
—Selenia, dark angel
Whenever an opponent casts a green spell, you draw a card.
"We can fight with you or against you. After my day, I'd prefer the former."
—Gerrard of the Weatherlight
Counter target activated ability from an artifact, creature, enchantment, or land. That permanent's activated abilities can't be activated this turn. (Mana abilities can't be targeted.)
Draw a card.
Search your library for three cards and reveal them. Target opponent chooses one. Put that card into your hand and the rest into your graveyard. Then shuffle.
At the beginning of your upkeep, you may put a treasure counter on this enchantment.
Sacrifice this enchantment: Gain control of target creature with power less than or equal to the number of treasure counters on this enchantment. (This effect lasts indefinitely.)
Exchange control of target artifact or creature and another target permanent that shares one of those types with it. (This effect lasts indefinitely.)
Squee tucked the warm ball in his pocket and slipped a pebble in its place. 'Glok,' he mumbled, and hid.
Search your library for any number of land cards, exile them, then shuffle.
"And when this land is wasted, where will we go?"
—Thalakos lament
: This creature gains flying until end of turn.
"Water is firmament to the finned."
—Oracle en-Vec
Flying
: This creature deals 1 damage to any target.
From its maw comes neither word nor whisper—only wind.
Draw four cards. You skip your next turn.
"Part of me believes that Barrin taught me meditation simply to shut me up."
—Ertai, wizard adept
All Slivers have ", Sacrifice this permanent: Draw a card."
"A jigsaw puzzle that lives, breeds, and thinks."
—Hanna, Weatherlight navigator
Counter target spell unless its controller pays . If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.
At the beginning of your upkeep, you may look at the top card of target opponent's library. If you do, you may put that card on the bottom of that player's library.
A gleam like struggling sunlight penetrated Selenia's dark thoughts.
Creatures can't attack you unless their controller pays for each creature they control that's attacking you.
"You've failed Gerrard. You've failed the Legacy. You've failed yourself. I can do no more."
—Volrath, to Karn
, Sacrifice this creature: Return target artifact card from your graveyard to your hand.
"Drop a dagger into the murky deep and the merfolk will cut your throat with it."
—Skyshroud saying
: This creature deals 1 damage to any target.
"Bitter water vicious wave
Shadow-cold shallows root-made maze
Home's angry embrace."
—Rootwater Saga
: Gain control of target creature for as long as that creature is enchanted.
You may cast Aura spells with enchant creature as though they had flash.
"Ugh! When did orcs and fish start having kids?"
—Gerrard of the Weatherlight
This creature can't attack unless defending player controls an Island.
Water is life. Or perhaps it is just something to wash it down with.
Target creature gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.)
Draw a card.
Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature has flying. (It can't be blocked except by creatures with flying or reach.)
: Return this Aura to its owner's hand.
The brighter the wings, the deeper the impact crater.
Cast this spell only if you've cast another spell this turn.
Flying
Condor's flight augurs sleepless night.
—Skyshroud proverb
Counter target spell with mana value X. (For example, if that spell's mana cost is , X is 5.)
Call it the thinking mage's version of brute force.
Enchant enchantment
You control enchanted enchantment.
"Why should I flatter another with imitation when I can satisfy myself through possession?"
—Ertai, wizard adept
, : This creature loses this ability and becomes an Aura enchantment with enchant creature. Attach it to target creature. You may pay to end this effect.
Whenever enchanted creature becomes tapped, this creature deals 2 damage to that creature's controller.
Shadow (This creature can block or be blocked by only creatures with shadow.)
You may choose not to untap this creature during your untap step.
Whenever this creature deals damage to an opponent, tap target creature. That creature doesn't untap during its controller's untap step for as long as this creature remains tapped.
Shadow (This creature can block or be blocked by only creatures with shadow.)
: Put this creature on top of its owner's library.
"They are 'between' in every way."
—Lyna, Soltari emissary
Shadow (This creature can block or be blocked by only creatures with shadow.)
When this creature leaves the battlefield, draw a card.
"You see our world when you shut your eyes so tightly that tiny shapes float before them."
—Lyna, to Ertai
Shadow (This creature can block or be blocked by only creatures with shadow.)
"Ill luck and poor geography caught the Thalakos between us and the Dauthi."
—Lyna, Soltari emissary
Put target creature on top of its owner's library.
"Gone today, here tomorrow."
—Ertai, wizard adept
Target player takes an extra turn after this one.
"Let's do it again!"
—Squee, goblin cabin hand
Flying
, Tap two untapped creatures you control: Return target permanent to its owner's hand.
It is said that the wind will blow the world past if you wait long enough.
You may tap or untap target artifact, creature, or land.
Draw a card.
Battles are won in nuance.
Whenever another creature enters, this creature becomes a copy of that creature, except it has this ability.
"In a world of untruths, the living lie rules."
—Oracle en-Vec
Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated. That creature's controller may sacrifice a permanent of their choice for that player to ignore this effect until end of turn.
: Return this Aura to its owner's hand.
Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Change the text of target permanent by replacing all instances of one color word with another or one basic land type with another until end of turn. (For example, you may change "nonred creature" to "nongreen creature" or "plainswalk" to "swampwalk.")
Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Draw a card.
"I followed her song only to find it was a dirge."
—Crovax
Flying
: Target creature gains flying until end of turn.
"Flying like a bird does not make you as free as one."
—Volrath
Flying
Orim regarded Gerrard coolly. "You are like the drake," she said, her expression unchanging. "It works hard to maintain its position, but to us it seems to glide along effortlessly. You must do the same."
All Sliver creatures have flying.
"Everything around here has cut a deal with gravity."
—Gerrard of the Weatherlight
As an additional cost to cast this spell, discard X cards.
Look at target opponent's hand and choose X cards from it. That player discards those cards.
As Gerrard's form vanished into the maw of trees, Hanna mouthed a silent plea, mourning a crushed dream.
Flying
Whenever this creature deals damage to a creature, this creature deals 3 damage to that creature's controller and 3 damage to you.
Sacrifice this creature: Add .
"You are wrong," Volrath said. "I do not hate the living. They often prove quite useful to me." And then he laughed.
: Put a bounty counter on target nonblack creature.
: Destroy target creature with a bounty counter on it.
"Once they've marked you," Starke said, "the world is made of glass."
: Exile this card and target creature unless that creature's controller pays . Activate only if this card is in your graveyard.
All Slivers have ": Regenerate this permanent."
"One would think I would be accustomed to unexpected returns."
—Hanna, Weatherlight navigator
Target opponent reveals their hand. You choose a card from it. That player discards that card.
"There's very little that escapes me, Greven. And you will escape very little if you fail."
—Volrath
You may choose not to untap this creature during your untap step.
, : Put target creature card from a graveyard onto the battlefield under your control. When this creature becomes untapped or you lose control of this creature, exile that creature.
Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
When Commander Greven il-Vec enters, sacrifice a creature.
"Rage is the only freedom left me."
—Greven il-Vec
Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Return the top creature card of your graveyard to the battlefield. That creature gains haste until end of turn. Exile it at the beginning of the next end step.
Destroy target nonblack creature. It can't be regenerated.
"It is the way of most wizards to begin by exiling themselves and to end by exiling everyone else."
—Hanna, Weatherlight navigator
Add .
"If there is such a thing as too much power, I have not discovered it."
—Volrath
: Regenerate this creature.
: This creature gets +1/+1 until end of turn.
"In this dark place, yes, I am afraid of my own shadow."
—Mirri of the Weatherlight
: Target creature gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.)
"The Dauthi army grows by screams and bounds."
—Lyna, Soltari emissary