TCG STRAT · Magic: the Gathering
Modular Monstrosity Unstable MTG card

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Modular Monstrosity

ARTIFACT CREATURE — CONSTRUCT Rare
Unstable UST #155
$0.19

Price history

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Modular Monstrosity price history chart, default range 3 months. currently $0.19.

View buying optionsMana Pool · Nonfoil

Modular Monstrosity Price Summary

Modular Monstrosity's current headline price is $0.19.

Modular Monstrosity Printings & Prices

2 printings

Modular Monstrosity has 2 tracked printings across 2 sets, in foil and nonfoil finishes.

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Sell Modular Monstrosity: Buylist Offers

3 offers
Buyer Printing Finish Cash offer Retail Spread
Card Kingdom UST #155 Foil
Card Kingdom ULST #59 Foil
Card Kingdom UST #155 Nonfoil

Modular Monstrosity Rules Text & Legality

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Artifact Creature — Construct — mana cost {7}

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, this creature gains that ability. Otherwise, this creature loses all keyword abilities.

Modular Monstrosity is not legal in any of the major constructed formats.

standard
Not legal
pioneer
Not legal
modern
Not legal
legacy
Not legal
commander
Not legal
pauper
Not legal

Modular Monstrosity Rulings

4 most recent
  • Jan 19, 2018 Each keyword can be chosen only once on any given day. And that counts every Modular Monstrosity you play with that day. You also can't reuse a keyword with a new modifier. For example, if you choose protection from Demons and from Dragons (totally counts), you can't choose protection from red later that day. Protection has already been used.
  • Jan 19, 2018 If you haven't made a valid choice after five seconds, Modular Monstrosity loses all keyword abilities, including ones its picked up in other ways.
  • Jan 19, 2018 If you make an invalid choice, you can still make a valid choice as long as time hasn't expired.
  • Jan 19, 2018 You may choose any keyword ability that appears on any printed Magic creature card. You can't pick keyword actions like explore or scry. If the keyword has a modifier, such as a mana cost or a number, you must choose a modifier that's been printed. Sorry, "annihilator 500" fans.

Reprints & Reprint Risk

3 printings

Modular Monstrosity has been reprinted 3 times.

Set Date Rarity Treatment
ULST #59 2022-10-07 Rare Standard
UST #155 2017-12-08 Rare Standard
UST #155 2017-12-08 Rare Standard

Modular Monstrosity FAQ

How much is Modular Monstrosity worth?

Modular Monstrosity is worth about $0.19 for its cheapest playable printing as of Sep 23, 2026.

Is Modular Monstrosity legal in Commander?

No — Modular Monstrosity is not legal in any of the major constructed formats (Standard, Pioneer, Modern, Legacy, Commander and Pauper).

Has Modular Monstrosity been reprinted?

Yes — Modular Monstrosity has been reprinted 3 times, with 2 printings tracked on The Index.

Why is Modular Monstrosity cheap?

Modular Monstrosity trades at about $0.19 — 3 reprints keep supply plentiful.