Modular Monstrosity #155 – Unstable (Rare)

Magic: The Gathering · Unstable · Rare

Modular Monstrosity #155 Price

Modular Monstrosity (#155, Rare) from Unstable is worth $0.19 to $4.29 in Near Mint condition on TCGplayer as of October 4, 2026, depending on the printing (Normal to Foil). On Cardmarket, Europe's main marketplace, the Foil sells for €0.66.

Near Mint · TCGplayer: $4.29
Near Mint · Cardmarket: €0.66
30-day change: 0.0%
Printings: 2

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Modular Monstrosity prices by printing

Near Mint market prices, updated October 4, 2026.

Printing	TCGplayer (USD)	Cardmarket (EUR)
Foil	$4.29	€0.66
Normal	$0.19	€0.15

TCGplayer market price and Cardmarket price for Near Mint English copies. They are two separate markets, so the euro figure is Cardmarket's own price, not a conversion of the dollar one. Source: TCGplayer, Cardmarket.

Card details

Set: Unstable
Card number: 155
Rarity: Rare
Released: December 8, 2017
Illustrator: Alex Konstad
Power / toughness: 3/3
Type line: Artifact Creature — Construct
Rules text: Whenever an opponent casts a spell, you have five seconds to choose a keyword you haven't chosen for a card named Modular Monstrosity today that's been printed on a creature card. If you do, Modular Monstrosity gains that ability. Otherwise, Modular Monstrosity loses all keyword abilities.

Modular Monstrosity: common questions

How much is Modular Monstrosity #155 worth?

Modular Monstrosity (#155, Rare) from Unstable is worth $0.19 to $4.29 in Near Mint condition on TCGplayer as of October 4, 2026, depending on the printing (Normal to Foil). On Cardmarket, Europe's main marketplace, the Foil sells for €0.66.

What set is Modular Monstrosity from?

Modular Monstrosity is card 155 in Unstable, released December 8, 2017. Its rarity is Rare. Illustrated by Alex Konstad.

Is Modular Monstrosity going up in price?

Over the last 30 days the Near Mint Foil price on TCGplayer moved from $4.29 (September 6, 2026) to $4.29 (October 4, 2026), a change of 0.0%. The 30-day low was $4.29 and the high $4.29.

How do I check what my Modular Monstrosity is worth?

Scan it with the TCG Vault app on iPhone: it identifies the card from the camera in seconds and shows its current market price and price history, then keeps it in your collection so you can follow its value.