Modular Monstrosity
Modular Monstrosity Price Summary
As of Aug 9, 2026, the cheapest tracked printing of Modular Monstrosity is $0.19 (ULST #59, Foil), and the most expensive is $4.72 (UST #155, Foil).
Modular Monstrosity Printings & Prices
Modular Monstrosity has 2 tracked printings across 2 sets, in foil and nonfoil finishes.
Sell Modular Monstrosity: Buylist Offers
Card Kingdom currently pays $1.40 cash for UST #155 (Foil); the retail-buylist spread on that printing is 65% (wide).
| Buyer | Printing | Finish | Cash offer | Retail | Spread |
|---|---|---|---|---|---|
| Card Kingdom | UST #155 | Foil | $1.40 | $3.99 | 65% |
| Card Kingdom | UST #155 | Nonfoil | $0.03 | $0.49 | 94% |
| Card Kingdom | ULST #59 | Foil | $0.03 | $0.49 | 94% |
Modular Monstrosity Rules Text & Legality
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.
Modular Monstrosity Rulings
- 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
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 |
ULST #59 
UST #155 Modular Monstrosity FAQ
How much is Modular Monstrosity worth?
Modular Monstrosity is worth about $0.20 for its cheapest playable printing as of Aug 9, 2026. Prices range from $0.20 to $4.72 across 2 tracked printings.
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 $0.20 — 3 reprints keep supply plentiful.