Modern Horizons 3

White Orchid Phantom

White Orchid Phantom {W}{W}

Creature - Spirit Knight
Flying, first strike
When White Orchid Phantom enters, destroy up to one target nonbasic land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.
His oath required no service beyond death, but his honor demanded it.
2/2
Wing It

Wing It {1}{W}

Instant
Target creature gets +2/+2 until end of turn. Put a flying counter on it. Scry 1.
After a moment's confusion, the otter splashed through clouds and gamboled in the wind, delighting in its newfound freedom.
Wrath of the Skies

Wrath of the Skies {X}{W}{W}

Sorcery
You get X {E}, then you may pay any amount of {E}. Destroy each artifact, creature, and enchantment with mana value less than or equal to the amount of {E} paid this way.
Even the weather of Dominaria shifts to assail would-be invaders.
Aether Spike

Aether Spike {1}{U}

Instant
Choose target spell. You get {E}{E}, then you may pay any amount of {E}. Counter that spell unless its controller pays {1} for each {E} paid this way.
"The shield doesn't block the fire physically. It tells the fire to stop."
—Genku, future shaper
Amphibian Downpour

Amphibian Downpour {2}{U}

Enchantment - Aura
Flash
Storm
Enchant creature
Enchanted creature loses all abilities and is a blue Frog creature with base power and toughness 1/1.
Bespoke Battlewagon

Bespoke Battlewagon {3}{U}

Artifact - Vehicle
{T}: You get {E}{E}.
{T}, Pay {E}{E}: Tap target creature.
{T}, Pay {E}{E}{E}: Draw a card.
Pay {E}{E}{E}{E}: Bespoke Battlewagon becomes an artifact creature until end of turn.
Crew 4
5/6
Brainsurge

Brainsurge {2}{U}

Instant
Draw four cards, then put two cards from your hand on top of your library in any order.
In the Cosmos, secrets swirl and spark like windborne embers, and only Alrund can capture them.
Consign to Memory

Consign to Memory {U}

Instant
Replicate {1}
Counter target triggered ability or colorless spell.
He wept not for what was, but what could never be.
Copycrook

Copycrook {2}{U}{U}

Creature - Shapeshifter Rogue
You may have Copycrook enter as a copy of any creature on the battlefield, except it has "Whenever this creature attacks, it connives."
The best hiding places are other people.
0/0
Corrupted Shapeshifter

Corrupted Shapeshifter {3}{U}

Creature - Eldrazi Shapeshifter
Devoid
As Corrupted Shapeshifter enters, it becomes your choice of a 3/3 creature with flying, a 2/5 creature with vigilance, or a 0/12 creature with defender.
Within its body, three lineages warred for supremacy.
*/*
Deem Inferior

Deem Inferior {3}{U}

Sorcery
This spell costs {1} less to cast for each card you've drawn this turn.
The owner of target nonland permanent puts it into their library second from the top or on the bottom.
Forced to behold such a pitiful demonstration of scholarship, Archmage Jeven could hold his tongue no longer.
Depth Defiler

Depth Defiler {3}{U}{U}

Creature - Eldrazi
Devoid
Kicker {C}
When you cast this spell, choose one. If it was kicked, choose both instead.
• Return target creature to its owner's hand.
• Target player draws two cards, then discards a card.
3/5
Dreamtide Whale

Dreamtide Whale {2}{U}

Creature - Whale
Vanishing 2
Whenever a player casts their second spell each turn, proliferate.
7/5
Electrozoa

Electrozoa {2}{U}

Creature - Jellyfish
Flash
Flying
When Electrozoa enters, you get {E}{E}.
At the beginning of your first main phase, tap Electrozoa unless you pay {E}.
3/1
Emrakul's Messenger

Emrakul's Messenger {1}{U}

Creature - Eldrazi Faerie Rogue
Devoid
Flying
Whenever you draw your second card each turn, create a 0/1 colorless Eldrazi Spawn creature token with "Sacrifice this creature: Add {C}."
"Obey her will! Don't be a fool! Submit your mind to Emrakul!"
2/1
Flare of Denial

Flare of Denial {1}{U}{U}

Instant
You may sacrifice a nontoken blue creature rather than pay this spell's mana cost.
Counter target spell.
"I see where you're going with that, and I don't like it."
Harbinger of the Seas

Harbinger of the Seas {1}{U}{U}

Creature - Merfolk Wizard
Nonbasic lands are Islands.
The rising moon calls mercilessly to the waves, commanding the sea to rise high enough to devour mountains.
2/2
Hope-Ender Coatl

Hope-Ender Coatl {2}{U}

Creature - Eldrazi Snake
Devoid
Flash
When you cast this spell, counter target spell an opponent controls unless they pay {1}.
Flying
2/2
Kozilek's Unsealing

Kozilek's Unsealing {2}{U}

Enchantment
Devoid
Whenever you cast a creature spell with mana value 4, 5, or 6, create two 0/1 colorless Eldrazi Spawn creature tokens with "Sacrifice this creature: Add {C}."
Whenever you cast a creature spell with mana value 7 or greater, draw three cards.
Petrifying Meddler

Petrifying Meddler {4}{U}

Creature - Eldrazi
Devoid
When you cast this spell, tap up to one target creature and put a stun counter on it.
Reach
4/5
Roil Cartographer

Roil Cartographer {1}{U}

Creature - Merfolk Rogue
Landfall — Whenever a land you control enters, you get {E}.
{T}, Pay six {E}: Draw three cards.
"The world shifts constantly, but that doesn't mean it can't be mapped. Our maps must shift as well."
1/3
Sage of the Unknowable

Sage of the Unknowable {1}{U}

Creature - Human Wizard
{T}: Add {C}. Spend this mana only to cast a colorless spell or to activate an ability.
"Someday, we will walk the Blind Eternities and see the truths that lie beyond the stifling veil of reality."
0/4
Serum Visionary

Serum Visionary {2}{U}

Creature - Vedalken Wizard
When Serum Visionary enters, draw a card, then scry 2.
"Pre-criminal notions detected in the Sixth Precinct. The suspect will confess when arrested in two hours."
2/2
Shadow of the Second Sun

Shadow of the Second Sun {4}{U}{U}

Enchantment - Aura
Enchant player
At the beginning of each of enchanted player's postcombat main phases, there is an additional beginning phase after this phase.
Live fully, then return to the beginning.
Strix Serenade

Strix Serenade {U}

Instant
Counter target artifact, creature, or planeswalker spell. Its controller creates a 2/2 blue Bird creature token with flying.
Some birds sing to nature's beauty and the freedom of the skies. Others simply ask questions.