In terms of Magic flavor and lore, The Brothers War is a masterpiece. The novel containing the nitty gritty didn't come out until 4 whole years after the set was released (just imagine that today), and it didn't even matter. 

If you read a fraction of the cards in Antiquities, you get the gist: brothers Urza and Mishra had a falling out that resulted in them becoming mortal enemies, with each building an army and consolidating their forces such that the entire land was ruined, and their mutually assured destruction at the end ensured that only ancient relics remained. Simple, easy, surprisingly deep, and doesn't require any of the hoops that today's story stuff has to jump through. 

I was a big fan, especially because of the Weatherlight stuff that came later. And since Karn, Scion of Urza was created by one of the Brothers, and I'm trying to make the deck colorless because of the project's EDH-esque deckbuilding requirements, a flavorful tie-in to the Antiquities epic seemed like a pretty easy connection. 

Like Artifacts? Then boy, do I have a deck for you: 

Magic: The Gathering TCG Deck - Karn, Scion of Urza by Andy Hurst

'Karn, Scion of Urza' - constructed deck list and prices for the Magic: The Gathering Trading Card Game from TCGplayer Infinite!

Created By: Andy Hurst

Event:

Rank:

Freeform (Casual)

Market Price: $53.76

Cards

Emergence Zone

Market Price: $0.59

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/187125_200w.jpg

{T}: Add {C}.
{1}, {T}, Sacrifice Emergence Zone: You may cast spells this turn as though they had flash.

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Traxos, Scourge of Kroog

Market Price: $0.50

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Trample
Traxos, Scourge of Kroog enters the battlefield tapped and doesn't untap during your untap step.
Whenever you cast a historic spell, untap Traxos. (Artifacts, legendaries, and Sagas are historic.)

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Yotian Soldier

Market Price: $0.01

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Vigilance

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Urza's Tome

Market Price: $0.10

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/162144_200w.jpg

{3}, {T}: Draw a card. Then discard a card unless you exile a historic card from your graveyard. (Artifacts, legendaries, and Sagas are historic.)

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Scour from Existence

Market Price: $0.21

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Exile target permanent.

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An-Havva Township

Color Identity:G,R,W

Market Price: $0.20

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/4445_200w.jpg

{T}: Add {C}.
{1}, {T}: Add {G}.
{2}, {T}: Add {R} or {W}.

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Urza's Power Plant

Market Price: $1.06

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218284_200w.jpg

{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.

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Battering Ram

Market Price: $0.12

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At the beginning of combat on your turn, Battering Ram gains banding until end of combat. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's blocking.)
Whenever Battering Ram becomes blocked by a Wall, destroy that Wall at end of combat.

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Universal Solvent

Market Price: $0.01

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{7}, {T}, Sacrifice Universal Solvent: Destroy target permanent.

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Self-Assembler

Market Price: $0.10

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When Self-Assembler enters the battlefield, you may search your library for an Assembly-Worker creature card, reveal it, put it into your hand, then shuffle.

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Buried Ruin

Market Price: $0.62

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{T}: Add {C}.
{2}, {T}, Sacrifice Buried Ruin: Return target artifact card from your graveyard to your hand.

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Steel Overseer

Market Price: $0.93

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{T}: Put a +1/+1 counter on each artifact creature you control.

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Castle Sengir

Color Identity:B,R,U

Market Price: $0.23

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/4467_200w.jpg

{T}: Add {C}.
{1}, {T}: Add {B}.
{2}, {T}: Add {U} or {R}.

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Soul-Guide Lantern

Market Price: $2.07

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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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Assembly-Worker

Market Price: $0.02

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{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

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Leonin Bladetrap

Market Price: $0.08

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Flash (You may cast this spell any time you could cast an instant.)
{2}, Sacrifice Leonin Bladetrap: It deals 2 damage to each attacking creature without flying.

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Crystal Vein

Market Price: $2.15

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{T}: Add {C}.
{T}, Sacrifice Crystal Vein: Add {C}{C}.

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Mishra's Self-Replicator

Market Price: $0.23

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Whenever you cast a historic spell, you may pay {1}. If you do, create a token that's a copy of Mishra's Self-Replicator. (Artifacts, legendaries, and Sagas are historic.)

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Puppet Strings

Market Price: $1.33

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{2}, {T}: You may tap or untap target creature.

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Onulet

Market Price: $0.24

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/1864_200w.jpg

When Onulet dies, you gain 2 life.

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Desert

Market Price: $0.11

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{T}: Add {C}.
{T}: Desert deals 1 damage to target attacking creature. Activate only during the end of combat step.

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Warping Wail

Market Price: $1.42

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/110995_200w.jpg

({C} represents colorless mana.)
Choose one —
• Exile target creature with power or toughness 1 or less.
• Counter target sorcery spell.
• Create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add {C}."

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Serum Tank

Market Price: $0.19

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Whenever Serum Tank or another artifact enters the battlefield, put a charge counter on Serum Tank.
{3}, {T}, Remove a charge counter from Serum Tank: Draw a card.

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Urza's Armor

Market Price: $0.19

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/11278_200w.jpg

If a source would deal damage to you, prevent 1 of that damage.

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Cogwork Assembler

Market Price: $0.06

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/219624_200w.jpg

{7}: Create a token that's a copy of target artifact. That token gains haste. Exile it at the beginning of the next end step.

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Alchemist's Vial

Market Price: $0.19

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/100410_200w.jpg

When Alchemist's Vial enters the battlefield, draw a card.
{1}, {T}, Sacrifice Alchemist's Vial: Target creature can't attack or block this turn.

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Stalking Stones

Market Price: $0.20

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/11588_200w.jpg

{T}: Add {C}.
{6}: Stalking Stones becomes a 3/3 Elemental artifact creature that's still a land. (This effect lasts indefinitely.)

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Urza's Bauble

Market Price: $3.29

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{T}, Sacrifice Urza's Bauble: Look at a card at random in target player's hand. You draw a card at the beginning of the next turn's upkeep.

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Mishra's Groundbreaker

Market Price: $0.13

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/4196_200w.jpg

{T}, Sacrifice Mishra's Groundbreaker: Target land becomes a 3/3 artifact creature that's still a land. (This effect lasts indefinitely.)

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Urza's Mine

Market Price: $1.10

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218281_200w.jpg

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

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Aysen Abbey

Color Identity:G,U,W

Market Price: $0.20

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/4455_200w.jpg

{T}: Add {C}.
{1}, {T}: Add {W}.
{2}, {T}: Add {G} or {U}.

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Tomb of the Spirit Dragon

Market Price: $0.48

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/93300_200w.jpg

{T}: Add {C}.
{2}, {T}: You gain 1 life for each colorless creature you control.

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Spatial Contortion

Market Price: $0.24

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/110699_200w.jpg

({C} represents colorless mana.)
Target creature gets +3/-3 until end of turn.

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Serrated Arrows

Market Price: $0.58

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Serrated Arrows enters the battlefield with three arrowhead counters on it.
At the beginning of your upkeep, if there are no arrowhead counters on Serrated Arrows, sacrifice it.
{T}, Remove an arrowhead counter from Serrated Arrows: Put a -1/-1 counter on target creature.

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Wall of Junk

Market Price: $1.66

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/7102_200w.jpg

Defender (This creature can't attack.)
When Wall of Junk blocks, return it to its owner's hand at end of combat. (Return it only if it's on the battlefield.)

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Jhoira's Familiar

Market Price: $0.43

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/219616_200w.jpg

Flying
Historic spells you cast cost {1} less to cast. (Artifacts, legendaries, and Sagas are historic.)

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Urza's Tower

Market Price: $1.02

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218285_200w.jpg

{T}: Add {C}. If you control an Urza's Mine and an Urza's Power-Plant, add {C}{C}{C} instead.

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Teeka's Dragon

Market Price: $7.65

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/5257_200w.jpg

Flying; trample; rampage 4 (Whenever this creature becomes blocked, it gets +4/+4 until end of turn for each creature blocking it beyond the first.)

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Juggernaut

Market Price: $0.02

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Juggernaut attacks each combat if able.
Juggernaut can't be blocked by Walls.

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Talon of Pain

Market Price: $0.16

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/11656_200w.jpg

Whenever a source you control other than Talon of Pain deals damage to an opponent, put a charge counter on Talon of Pain.
{X}, {T}, Remove X charge counters from Talon of Pain: It deals X damage to any target.

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School of the Unseen

Market Price: $0.23

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/4229_200w.jpg

{T}: Add {C}.
{2}, {T}: Add one mana of any color.

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Koskun Keep

Color Identity:B,G,R

Market Price: $0.16

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/4518_200w.jpg

{T}: Add {C}.
{1}, {T}: Add {R}.
{2}, {T}: Add {B} or {G}.

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Urza's Factory

Market Price: $0.10

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/234351_200w.jpg

{T}: Add {C}.
{7}, {T}: Create a 2/2 colorless Assembly-Worker artifact creature token.

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Karn, Scion of Urza

Market Price: $7.76

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/162259_200w.jpg

+1: Reveal the top two cards of your library. An opponent chooses one of them. Put that card into your hand and exile the other with a silver counter on it.
−1: Put a card you own with a silver counter on it from exile into your hand.
−2: Create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."

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Jhoira's Toolbox

Market Price: $0.26

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/6331_200w.jpg

{2}: Regenerate target artifact creature.

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Mishra's Factory

Market Price: $0.05

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/244010_200w.jpg

{T}: Add {C}.
{1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

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Archaeological Dig

Market Price: $0.25

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/7419_200w.jpg

{T}: Add {C}.
{T}, Sacrifice Archaeological Dig: Add one mana of any color.

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Juju Bubble

Market Price: $0.18

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/5866_200w.jpg

Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
When you play a card, sacrifice Juju Bubble.
{2}: You gain 1 life.

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Manifold Key

Market Price: $0.71

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/192637_200w.jpg

{1}, {T}: Untap another target artifact.
{3}, {T}: Target creature can't be blocked this turn.

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Wizards' School

Color Identity:B,U,W

Market Price: $0.24

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/4573_200w.jpg

{T}: Add {C}.
{1}, {T}: Add {U}.
{2}, {T}: Add {W} or {B}.

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Guardians of Koilos

Market Price: $0.01

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When Guardians of Koilos enters the battlefield, you may return another target historic permanent you control to its owner's hand. (Artifacts, legendaries, and Sagas are historic.)

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Mishra's Bauble

Market Price: $10.13

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{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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The Game Plan

Get ready to construct artificial monstrosities and lay siege to the opponent with the metal behemoths. Because of a minor rule I was using with these decks, I was a little short on suitable basics, so I tried to construct the manabase without them. The Urza Tron package gets a chance for some degeneracy here. Tomb of the Spirit Dragon also shines as a land that can swing a game. All your creatures are colorless, so you could stand to gain quite the pile of life. 

The creature base is filled with artifacts, and due to the Brothers War flavor, I tried to lean as heavily as I could on various Assembly-Workers. Juggernaut was another icon that deserved some love, as well as ancient throwbacks Onulet and Yotian Soldier

The spell base has a couple heavy hitters...and some steaming piles. Juju Bubble is a nod to my buddy Jay, who even today criticizes me for taking it out of my Weatherlight-flavored casual deck. In my defense, the card is really bad. However, the art is fantastic, it's got some flavor implications, and it does provide an additional means to pad the life total. Both Urza's and Mishra's Baubles get some play here, Puppet Strings allows us to have some say over the attack step, and Urza's Armor keeps off the riff-raff. We are cheating on the flavor juuuuust a bit with Eldrazi-themed removal spells Spatial Distortion, Warping Wail, and Scour from Existence...but c'mon. It's a colorless deck and they're colorless spells. I'm a (deck) doctor, not a miracle worker!

The Rares

Steel Overseer

Pop Quiz Hotshot: who would have built the Overseer? Urza or Mishra? Holler at me and let me know! Winning guesses will earn a valuable prize*. We're playing a ton of artifacts here, so it only makes sense that we play an artifact creature lord. Give this an activation or two, and our forces will be out of control. 

Magic Design has come a long way! If this monstrosity was printed in Antiquities I'm sure we would have had to Armageddon ourselves or some such. As it is, we get an undercosted smasher. If you get a chance to think about historic triggers for a second, you'll realize that artifacts are included! And boy are we playing an awful lot of those. So we will not have to worry about Sir Traxos staying tapped. We just get to the smashing. 

Ah, finally something for our Urza Tron to do! Although Urza would never sanction helping out Mishra's contraptions for realzies, in this deck the two will work together harmoniously. It only takes a couple spells for us to have an enormous pile of 2/2s, Traxos might be the hammer that the opponent struggles to deal with, but the Self-Replicator here can run away with a game just as easily. 

Nostalgia alert! For a long time, this was my white whale. Back in the mid/late 90's, I wanted this card more than anything. I'm sure that the money I spent on Mirage packs trying to crack one of these dopes probably could have gotten me a couple Dual Lands back then (remember, dual lands were only equivalent to like 1.75 starter packs back then) but that didn't stop me. It just looked so cool, and I decided I had to have one. My local store didn't have one, and there was no way my parents were going to let me give their credit card information to some random company that advertised selling singles in Scrye Magazine. Eventually, my buddy got hold of one and traded it to me for the meager sum of a Mox Diamond, then just gave me back the Mox Diamond because he felt guilty about ripping me off. Teeka's Dragon might win us some games here, it's a 5/5 flyer and god help the opponent if they're silly enough to double block it. But it's really here because, like the Brothers War itself, it's a fun reminder of how Magic used to be. 

Unsung Hero

There are a lot of incredible nonbasic lands today, and creature lands have come a long way as well. But back in the day, there was only Mishra's Factory. And it was a format-defining house. Ever want to see how powerful it is? Check out the Old School format for just a short time and see how warping the land is. It can easily stop most of the other powerful efficient threats of the day. White Knight, Black Knight, Good Night—who cares? It ain't stopping the Factory. Whirling Dervish? Don't be silly. Factory is an amazing defensive creature, a fine offensive creature in the right circumstances, and since we're actually playing a ton of Assembly-Workers (guess what Mishra's Self-Replicator and all of its copies are?), it doesn't even have to animate. It can just sit there and threaten to ruin combats.