Expressive Iteration is one of the most underrated cards in Strixhaven.

I personally overlooked it when originally rating my top 10 cards of the set. Sometimes an uncommon like this looks unassuming, but a card doesn't need to be a flashy mythic rare in order to be one of the all-stars of a set. Yes, you do need to be playing the colors blue and red, which slightly limits the decks that can play it, but also these are the perfect colors for it.

What Makes Expressive Iteration So Powerful?

Prismari decks are all about getting advantages out of your instants and sorceries, and this spell is pure card advantage. There is a ton of flexibility in terms of when you actually cast Expressive Iteration. Remember that the card you exile and play off of it can be a land, and a large percentage of the time at least one of the three cards you look at will be a land. It is not an ideal play on turn two unless you have played a piece of mana acceleration on turn one or have zero-mana spells you can potentially play off it, just because on turn two you likely won't be playing anything off it from exile. Still, its floor is an Anticipate, and it usually will be a ton better.

Turn three and onwards is ideally when you'll play Expressive Iteration. This is the closest thing you will ever see to a "look at three cards and draw two of them" for two mana. Prowess-style decks will love a card like this, as it is very similar to a Light up the Stage that also helps you sift through your deck. Likely you want to pair Expressive Iteration with cheap spells, to ensure you don't fall too behind in the game while still gaining your card advantage.

Ultimately, this is a card draw spell. Most of the time it is going to draw two out of the top three cards of your choosing. If that's how the card actually read, it would be totally broken. There are going to be some situations where you can't make use of the card you exile the same turn you cast Expressive Iteration, but you can make it so that rarely happens.

Iteration #1: Grixis Death's Shadow (Modern)

This card will go far beyond Standard. The question isn't whether Expressive Iteration is good enough, it's about what decks can it go into. Do you need to create completely new archetypes for it to shine, or are there established decks where it could work well?

Straight Izzet decks are the natural home for Expressive Iteration, but thinking a bit outside the box there may be other decks it also fits well in. For example, Modern Grixis Death's Shadow. Let's see at what a version of that deck could look like:

Magic: The Gathering TCG Deck - Grixis Death's Shadow by Seth Manfield

'Grixis Death's Shadow' - constructed deck list and prices for the Magic: The Gathering Trading Card Game from TCGplayer Infinite!

Created By: Seth Manfield

Event:

Rank:

Modern

Market Price: $748.53

Cards

Mystical Dispute

Color Identity:U

Market Price: $0.92

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/198683_200w.jpg

This spell costs {2} less to cast if it targets a blue spell.
Counter target spell unless its controller pays {3}.

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Kozilek's Return

Color Identity:R

Market Price: $3.52

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/110829_200w.jpg

Devoid (This card has no color.)
Kozilek's Return deals 2 damage to each creature.
Whenever you cast an Eldrazi creature spell with mana value 7 or greater, you may exile Kozilek's Return from your graveyard. If you do, Kozilek's Return deals 5 damage to each creature.

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Lurrus of the Dream-Den

Color Identity:B,W

Market Price: $6.24

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/212282_200w.jpg

Companion — Each permanent card in your starting deck has mana value 2 or less. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} any time you could cast a sorcery.)
Lifelink
During each of your turns, you may cast one permanent spell with mana value 2 or less from your graveyard.

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Snapcaster Mage

Color Identity:U

Market Price: $51.63

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/179455_200w.jpg

Flash
When Snapcaster Mage enters the battlefield, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)

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Death's Shadow

Color Identity:B

Market Price: $4.30

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218843_200w.jpg

Death's Shadow gets -X/-X, where X is your life total.

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Agadeem's Awakening

Color Identity:B

Market Price: $13.58

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/222163_200w.jpg

Return from your graveyard to the battlefield any number of target creature cards that each have a different mana value X or less.

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Thoughtseize

Color Identity:B

Market Price: $12.24

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218934_200w.jpg

Target player reveals their hand. You choose a nonland card from it. That player discards that card. You lose 2 life.

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Temur Battle Rage

Color Identity:R

Market Price: $0.04

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/227059_200w.jpg

Target creature gains double strike until end of turn.
Ferocious — That creature also gains trample until end of turn if you control a creature with power 4 or greater.

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Bloodstained Mire

Market Price: $31.81

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/92830_200w.jpg

{T}, Pay 1 life, Sacrifice Bloodstained Mire: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.

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Scourge of the Skyclaves

Color Identity:B

Market Price: $3.26

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/222085_200w.jpg

Kicker {4}{B}
When you cast this spell, if it was kicked, each player loses half their life, rounded up.
Scourge of the Skyclaves's power and toughness are each equal to 20 minus the highest life total among players.

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Steam Vents

Color Identity:R,U

Market Price: $13.80

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/175202_200w.jpg

({T}: Add {U} or {R}.)
As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

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Disdainful Stroke

Color Identity:U

Market Price: $0.04

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/230900_200w.jpg

Counter target spell with mana value 4 or greater.

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Stubborn Denial

Color Identity:U

Market Price: $0.98

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/93033_200w.jpg

Counter target noncreature spell unless its controller pays {1}.
Ferocious — If you control a creature with power 4 or greater, counter that spell instead.

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Polluted Delta

Market Price: $38.20

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/92829_200w.jpg

{T}, Pay 1 life, Sacrifice Polluted Delta: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.

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Swamp

Color Identity:B

Market Price: $0.06

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/196608_200w.jpg

({T}: Add {B}.)

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Collective Brutality

Color Identity:B

Market Price: $3.80

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/120116_200w.jpg

Escalate—Discard a card. (Pay this cost for each mode chosen beyond the first.)
Choose one or more —
• Target opponent reveals their hand. You choose an instant or sorcery card from it. That player discards that card.
• Target creature gets -2/-2 until end of turn.
• Target opponent loses 2 life and you gain 2 life.

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Lightning Bolt

Color Identity:R

Market Price: $2.53

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/216484_200w.jpg

Lightning Bolt deals 3 damage to any target.

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Kolaghan's Command

Color Identity:B,R

Market Price: $8.90

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/96518_200w.jpg

Choose two —
• Return target creature card from your graveyard to your hand.
• Target player discards a card.
• Destroy target artifact.
• Kolaghan's Command deals 2 damage to any target.

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Nihil Spellbomb

Color Identity:B

Market Price: $0.38

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/161909_200w.jpg

{T}, Sacrifice Nihil Spellbomb: Exile target player's graveyard.
When Nihil Spellbomb is put into a graveyard from the battlefield, you may pay {B}. If you do, draw a card.

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Serum Visions

Color Identity:U

Market Price: $0.83

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/243835_200w.jpg

Draw a card. Scry 2.

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Scalding Tarn

Market Price: $32.28

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/238610_200w.jpg

{T}, Pay 1 life, Sacrifice Scalding Tarn: Search your library for an Island or Mountain card, put it onto the battlefield, then shuffle.

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Aether Gust

Color Identity:U

Market Price: $0.25

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/192535_200w.jpg

Choose target spell or permanent that's red or green. Its owner puts it on the top or bottom of their library.

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Blood Crypt

Color Identity:B,R

Market Price: $14.97

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/182838_200w.jpg

({T}: Add {B} or {R}.)
As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

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Expressive Iteration

Color Identity:R,U

Market Price: $5.87

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/235845_200w.jpg

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.

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Mishra's Bauble

Market Price: $10.10

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218598_200w.jpg

{T}, Sacrifice Mishra's Bauble: Look at the top card of target player's library. Draw a card at the beginning of the next turn's upkeep.

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Inquisition of Kozilek

Color Identity:B

Market Price: $2.83

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/128476_200w.jpg

Target player reveals their hand. You choose a nonland card from it with mana value 3 or less. That player discards that card.

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Watery Grave

Color Identity:B,U

Market Price: $10.90

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/175205_200w.jpg

({T}: Add {U} or {B}.)
As Watery Grave enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

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Dismember

Color Identity:B

Market Price: $2.52

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/98390_200w.jpg

({B/P} can be paid with either {B} or 2 life.)
Target creature gets -5/-5 until end of turn.

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Fatal Push

Color Identity:B

Market Price: $2.00

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218830_200w.jpg

Destroy target creature if it has mana value 2 or less.
Revolt — Destroy that creature if it has mana value 4 or less instead if a permanent you controlled left the battlefield this turn.

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Delver of Secrets

Color Identity:U

Market Price: $0.46

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/56246_200w.jpg

At the beginning of your upkeep, look at the top card of your library. You may reveal that card. If an instant or sorcery card is revealed this way, transform Delver of Secrets.

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Island

Color Identity:U

Market Price: $0.05

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/215718_200w.jpg

({T}: Add {U}.)

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Engineered Explosives

Market Price: $16.91

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218293_200w.jpg

Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.)
{2}, Sacrifice Engineered Explosives: Destroy each nonland permanent with mana value equal to the number of charge counters on Engineered Explosives.

Buy This Card! https://www.tcgplayer.com/product/218293/magic-double-masters-engineered-explosives

This is a bit different from your normal Grixis Death's Shadow list in order to make Expressive Iteration as effective as possible. Proactive cards work better with Expressive Iteration, as you want to have cards you can play off of it right away. Yes, it's always possible to choose one of the cards you see and put it in your hand, or back in your deck, but sometimes things get awkward. Imagine you hit only countermagic and Temur Battle Rage off Expressive Iteration (though yes, this is an unlikely scenario).

One of the reasons it makes sense for Grixis Death's Shadow to play Expressive Iteration is that it's full of one-mana spells, and even has a zero-mana spell in Mishra's Bauble. This makes it even easier to have something to quickly play off Expressive Iteration. You are going to want to think about your life total though, and whether it's going to be possible to cast Death's Shadow on turn three if you find one. Since we added in Expressive Iteration, you are going to want to cut down on some of the other card filtering like Serum Visions. Expressive Iteration is fine alongside Snapcaster Mage but not fantastic, as you probably won't want to flash it back until turn five or later.

While I think there are good arguments for running Expressive Iteration in Grixis Death's Shadow, there may not end up being the full four copies in the archetype once the metagame settles down. However, this should provide a good idea of what sort of decks want Expressive Iteration, and how to tune your deck to make the best use out of it.

Iteration #2: Izzet Phoenix (Historic)

At the moment, Izzet decks aren't seeing a ton of play in most formats, but it's not like they're gone—they may have just been waiting for a card like Expressive Iteration to thrive again. Let's take a look at some blue-red strategies that should look to get a boost from this card.

First up we have Arclight Phoenix, a card that has been known as a primarily Izzet weapon. The question is whether Expressive Iteration works well alongside bringing Phoenixes back from the graveyard, and I believe it can. While I could choose a few different formats to showcase the Phoenix deck, I would like to look at a recent list from Wyatt Darby in Historic:

Magic: The Gathering TCG Deck - Izzet Phoenix by Wyatt Darby

'Izzet Phoenix' - constructed deck list and prices for the Magic: The Gathering Trading Card Game from TCGplayer Infinite!

Created By: Wyatt Darby

Event:

Rank:

Historic

Market Price: $184.65

Cards

Sulfur Falls

Color Identity:R,U

Market Price: $4.60

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/162122_200w.jpg

Sulfur Falls enters the battlefield tapped unless you control an Island or a Mountain.
{T}: Add {U} or {R}.

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Negate

Color Identity:U

Market Price: $0.09

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/222130_200w.jpg

Counter target noncreature spell.

Buy This Card! https://www.tcgplayer.com/product/222130/magic-zendikar-rising-negate

Island

Color Identity:U

Market Price: $0.05

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/215718_200w.jpg

({T}: Add {U}.)

Buy This Card! https://www.tcgplayer.com/product/215718/magic-core-set-2021-island-265

Faithless Looting

Color Identity:R

Market Price: $0.43

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/236106_200w.jpg

Draw two cards, then discard two cards.
Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

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Sweltering Suns

Color Identity:R

Market Price: $0.45

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/130169_200w.jpg

Sweltering Suns deals 3 damage to each creature.
Cycling {3} ({3}, Discard this card: Draw a card.)

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Disdainful Stroke

Color Identity:U

Market Price: $0.04

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/230900_200w.jpg

Counter target spell with mana value 4 or greater.

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Young Pyromancer

Color Identity:R

Market Price: $0.47

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/216454_200w.jpg

Whenever you cast an instant or sorcery spell, create a 1/1 red Elemental creature token.

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Chart a Course

Color Identity:U

Market Price: $0.30

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/216309_200w.jpg

Draw two cards. Then discard a card unless you attacked this turn.

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Spell Pierce

Color Identity:U

Market Price: $0.24

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/145258_200w.jpg

Counter target noncreature spell unless its controller pays {2}.

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Mountain

Color Identity:R

Market Price: $0.06

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/215723_200w.jpg

({T}: Add {R}.)

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Riverglide Pathway

Color Identity:R,U

Market Price: $5.76

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/221822_200w.jpg

{T}: Add {U}.

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Brainstorm

Color Identity:U

Market Price: $0.50

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/243841_200w.jpg

Draw three cards, then put two cards from your hand on top of your library in any order.

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Dreadhorde Arcanist

Color Identity:R

Market Price: $1.26

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/187242_200w.jpg

Trample
Whenever Dreadhorde Arcanist attacks, you may cast target instant or sorcery card with mana value less than or equal to Dreadhorde Arcanist's power from your graveyard without paying its mana cost. If that spell would be put into your graveyard this turn, exile it instead.

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Aether Gust

Color Identity:U

Market Price: $0.25

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/192535_200w.jpg

Choose target spell or permanent that's red or green. Its owner puts it on the top or bottom of their library.

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Fabled Passage

Market Price: $4.67

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/215556_200w.jpg

{T}, Sacrifice Fabled Passage: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Then if you control four or more lands, untap that land.

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Mystical Dispute

Color Identity:U

Market Price: $0.92

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/198683_200w.jpg

This spell costs {2} less to cast if it targets a blue spell.
Counter target spell unless its controller pays {3}.

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Soul-Guide Lantern

Market Price: $2.02

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/206867_200w.jpg

When Soul-Guide Lantern enters the battlefield, exile target card from a graveyard.
{T}, Sacrifice Soul-Guide Lantern: Exile each opponent's graveyard.
{1}, {T}, Sacrifice Soul-Guide Lantern: Draw a card.

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Stormwing Entity

Color Identity:U

Market Price: $0.73

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/215582_200w.jpg

This spell costs {2}{U} less to cast if you've cast an instant or sorcery spell this turn.
Flying
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Stormwing Entity enters the battlefield, scry 2.

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Expressive Iteration

Color Identity:R,U

Market Price: $5.87

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/235845_200w.jpg

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.

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Opt

Color Identity:U

Market Price: $0.11

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/215840_200w.jpg

Scry 1.
Draw a card.

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Lightning Axe

Color Identity:R

Market Price: $0.09

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/233921_200w.jpg

As an additional cost to cast this spell, discard a card or pay {5}.
Lightning Axe deals 5 damage to target creature.

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Shock

Color Identity:R

Market Price: $0.06

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/215884_200w.jpg

Shock deals 2 damage to any target.

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Abrade

Color Identity:R

Market Price: $0.08

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/253063_200w.jpg

Choose one —
• Abrade deals 3 damage to target creature.
• Destroy target artifact.

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Steam Vents

Color Identity:R,U

Market Price: $13.80

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/175202_200w.jpg

({T}: Add {U} or {R}.)
As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

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Arclight Phoenix

Color Identity:R

Market Price: $5.03

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/176685_200w.jpg

Flying, haste
At the beginning of combat on your turn, if you've cast three or more instant and sorcery spells this turn, return Arclight Phoenix from your graveyard to the battlefield.

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God-Eternal Kefnet

Color Identity:U

Market Price: $2.75

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/188507_200w.jpg

Flying
You may reveal the first card you draw each turn as you draw it. Whenever you reveal an instant or sorcery card this way, copy that card and you may cast the copy. That copy costs {2} less to cast.
When God-Eternal Kefnet dies or is put into exile from the battlefield, you may put it into its owner's library third from the top.

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While this is basically a day-one decklist of a brand-new format, it also shows that other people are on the same page as far as Expressive Iteration. Setting up to bring Arclight Phoenix back on turn four is quite straightforward here, as a turn-two Expressive Iteration into a pair of one-mana spells means you are off to the races.

This list is trying to do a lot, from bringing back Arclight Phoenix, to copying spells with God-Eternal Kefnet, to using Brainstorm and Faithless Looting to quickly dig through your deck. Unlike Faithless Looting and Brainstorm though, Expressive Iteration actually is card advantage, as you are netting one card total. The other two are mostly about digging, not resource advantage.

Iteration #3: Izzet Prowess (Modern)

I saved the best for last. While you can make good arguments for including Expressive Iteration in many decks, I can find no better home for it than in Izzet Prowess. The question becomes which format Izzet Prowess is at its best.

I'm going to go back to Modern though. This is my own build of the deck, but I'm very interested to see what others do with the deck too:

Magic: The Gathering TCG Deck - Izzet Prowess by Seth Manfield

'Izzet Prowess' - constructed deck list and prices for the Magic: The Gathering Trading Card Game from TCGplayer Infinite!

Created By: Seth Manfield

Event:

Rank:

Modern

Market Price: $369.36

Cards

Tormod's Crypt

Market Price: $0.36

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/215346_200w.jpg

{T}, Sacrifice Tormod's Crypt: Exile target player's graveyard.

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Fiery Islet

Color Identity:R,U

Market Price: $12.31

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/190806_200w.jpg

{T}, Pay 1 life: Add {U} or {R}.
{1}, {T}, Sacrifice Fiery Islet: Draw a card.

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Gut Shot

Color Identity:R

Market Price: $1.24

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/98817_200w.jpg

({R/P} can be paid with either {R} or 2 life.)
Gut Shot deals 1 damage to any target.

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Mutagenic Growth

Color Identity:G

Market Price: $1.53

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/98842_200w.jpg

({G/P} can be paid with either {G} or 2 life.)
Target creature gets +2/+2 until end of turn.

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Abrade

Color Identity:R

Market Price: $0.08

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/253063_200w.jpg

Choose one —
• Abrade deals 3 damage to target creature.
• Destroy target artifact.

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Soul-Scar Mage

Color Identity:R

Market Price: $0.88

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/129885_200w.jpg

Prowess
If a source you control would deal noncombat damage to a creature an opponent controls, put that many -1/-1 counters on that creature instead.

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Wooded Foothills

Market Price: $35.30

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/92831_200w.jpg

{T}, Pay 1 life, Sacrifice Wooded Foothills: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.

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Arid Mesa

Market Price: $18.42

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/238607_200w.jpg

{T}, Pay 1 life, Sacrifice Arid Mesa: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle.

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Spirebluff Canal

Color Identity:R,U

Market Price: $13.57

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/122672_200w.jpg

Spirebluff Canal enters the battlefield tapped unless you control two or fewer other lands.
{T}: Add {U} or {R}.

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Mountain

Color Identity:R

Market Price: $0.06

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/215723_200w.jpg

({T}: Add {R}.)

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Manamorphose

Color Identity:G,R

Market Price: $3.83

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218810_200w.jpg

Add two mana in any combination of colors.
Draw a card.

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Vapor Snag

Color Identity:U

Market Price: $0.33

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/98778_200w.jpg

Return target creature to its owner's hand. Its controller loses 1 life.

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Monastery Swiftspear

Color Identity:R

Market Price: $1.56

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/145323_200w.jpg

Haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

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Blood Moon

Color Identity:R

Market Price: $17.22

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218848_200w.jpg

Nonbasic lands are Mountains.

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Spell Pierce

Color Identity:U

Market Price: $0.24

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/145258_200w.jpg

Counter target noncreature spell unless its controller pays {2}.

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Sprite Dragon

Color Identity:R,U

Market Price: $0.85

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/212044_200w.jpg

Flying, haste
Whenever you cast a noncreature spell, put a +1/+1 counter on Sprite Dragon.

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Bloodstained Mire

Market Price: $31.81

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/92830_200w.jpg

{T}, Pay 1 life, Sacrifice Bloodstained Mire: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.

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Expressive Iteration

Color Identity:R,U

Market Price: $5.87

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/235845_200w.jpg

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.

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Steam Vents

Color Identity:R,U

Market Price: $13.80

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/175202_200w.jpg

({T}: Add {U} or {R}.)
As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

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Light Up the Stage

Color Identity:R

Market Price: $0.24

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/243900_200w.jpg

Spectacle {R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)
Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

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Lightning Bolt

Color Identity:R

Market Price: $2.53

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/216484_200w.jpg

Lightning Bolt deals 3 damage to any target.

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Lava Dart

Color Identity:R

Market Price: $0.19

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/190635_200w.jpg

Lava Dart deals 1 damage to any target.
Flashback—Sacrifice a Mountain. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

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Mystical Dispute

Color Identity:U

Market Price: $0.92

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/198683_200w.jpg

This spell costs {2} less to cast if it targets a blue spell.
Counter target spell unless its controller pays {3}.

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Bedlam Reveler

Color Identity:R

Market Price: $0.73

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/120430_200w.jpg

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.
Prowess
When Bedlam Reveler enters the battlefield, discard your hand, then draw three cards.

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Runaway Steam-Kin

Color Identity:R

Market Price: $0.36

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/176427_200w.jpg

Whenever you cast a red spell, if Runaway Steam-Kin has fewer than three +1/+1 counters on it, put a +1/+1 counter on Runaway Steam-Kin.
Remove three +1/+1 counters from Runaway Steam-Kin: Add {R}{R}{R}.

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This is my style of deck! It is quite similar to Mono-Red Prowess, but you get to play Sprite Dragon and Expressive Iteration. There are also some additional blue interactive spells in the sideboard. You could play more blue cards in the maindeck like cantrips, Snapcaster Mage, or Stormwing Entity, but I decided to keep the list clean. By not having other blue cards you can actually play Runaway Steam-Kin, a card I really like in this sort of deck.

We can generate a ton of additional mana off Runaway Steam-Kin, to the point that turn-three kills become much more realistic. Having zero-mana cards makes Light up the Stage and Expressive Iteration that much better, and is one of the big reasons for the inclusion of Gut Shot. It won't be uncommon that you'll get to play something like Expressive Iteration into Gut Shot into Light up the Stage, for a tremendous burst of damage and card advantage.

Of course, creatures like Monastery Swiftspear and Soul-Scar Mage are going to be fantastic here. I haven't included Bedlam Reveler in the maindeck, though you could fit in a couple copies. I don't think playing the full playset of Bedlam Reveler would be a good idea though. They have their moments, but I think for the most part Expressive Iteration is an upgrade, as you can cast it more freely since it's less conditional.

* * *

Expressive Iteration is the best card draw spell we've seen in a long time. It may not read as a traditional card draw spell, but that's exactly what it is. Personally, I think this was excellently designed, as while the card is clearly very good, you need to do a bit of work in order to find a good home for it. If Expressive Iteration had cost one generic and one blue mana, it would be way too strong.