Magic: The Gathering

Invasion of Tarkir // Defiant Thundermaw

March of the Machine Promos 149s • mythic

Set: March of the Machine Promos
Collector number: 149s
Rarity: Mythic
Mana cost: 1 generic mana red mana
Type: Creature
Colors: Red
Artist: Darren Tan
Finish: Foil

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Market

What it's worth

$6.99market price via TCGplayer · Aug 19, 2026

Estimate for a typical copy of Invasion of Tarkir // Defiant Thundermaw; condition, printing, and grading move the real number.

Lore

Why it matters

This mythic card captures a distinct, high-stakes moment within its set, making it a prized centerpiece for those who value both rarity and artistic detail. As a creature card, it brings a formidable presence to any collection, serving as a striking example of the visual storytelling found in these specialized promotional releases.

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Card face

What it does

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)

When this Siege enters, reveal any number of Dragon cards from your hand. When you do, this Siege deals X plus 2 damage to any other target, where X is the number of cards revealed this way. (X can be 0.)

Formats

Where you can play it

StandardNot legal
PioneerLegal
ModernLegal
LegacyLegal
VintageLegal
CommanderLegal
PauperNot legal
BrawlLegal
HistoricLegal
TimelessLegal
Penny DreadfulLegal
OathbreakerLegal

Portions of the materials used are property of Wizards of the Coast. ©Wizards of the Coast LLC. Card text via Scryfall. Not approved or endorsed by Wizards. As of the last catalogue refresh.

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Provenance

Where it came from

Invasion of Tarkir // Defiant Thundermaw was released in 2023 as part of the promotional offerings for the Magic: The Gathering set March of the Machine. This double-faced card serves as a narrative pivot point, representing the widespread multiversal conflict where the Phyrexians invaded the plane of Tarkir. The design reflects the set's central theme of collaboration, depicting the dragon Atarka joining forces with the dragonlord's brood to repel the invaders.

The card was illustrated by Darren Tan, a longtime contributor to the franchise known for his dynamic, high-fantasy aesthetic. Tan focused on capturing the immense scale and elemental ferocity of the dragon, emphasizing the textures of its scales and the intensity of its breath weapon. Upon its release, the card was well-received by players for both its thematic integration into the game's lore and its utility as a powerful mythic rare creature that showcases the resilience of the Tarkir plane.

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Other printings

Every version of this card

The same card, printed again — different sets, treatments, and prices.

Invasion of Tarkir // Defiant ThundermawMarch of the Machine · #149 · mythic · 2023$1.90

Collectors

Who's collecting this

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About

About Invasion of Tarkir // Defiant Thundermaw

Invasion of Tarkir // Defiant Thundermaw is a card in the Magic: The Gathering catalog on collecto.rs. March of the Machine Promos 149s • mythic. Catalog data is sourced from Scryfall. No public cards collectors track this one yet — adding yours would make you the first on collecto.rs.

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Where does the Invasion of Tarkir // Defiant Thundermaw catalog entry come from?

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