Modular Monstrosity 
Artifact Creature — Construct3/3
Oracle text (EN)
Artifact Creature — Construct
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.
Printing details
- Set
- UST · 155
- Rarity
- Rare
- Language
- EN
- Artist
- Alex Konstad
- Released
- 2017-12-08
- Prices
- €0.14 · $0.19
Price history
The trend shows with at least 7 days of history.
- Cardmarket, trend
- CardTrader, Near Mint minimum (EN)
The history starts on October 28, 2026 and grows every day.
Show the data
| Date | Cardmarket, trend | CardTrader, Near Mint minimum (EN) |
|---|---|---|
| October 28, 2026 | €0.14 | €0.15 |
Prices
| Source | Non-foil | Foil |
|---|---|---|
| Cardmarket | low €0.04 trend €0.14 30-day avg €0.15 | low €0.25 trend €0.63 30-day avg €0.47 |
| CardTrader (EN) | NM from €0.15 with Zero from €0.15 | NM from €0.83 with Zero from €0.83 |
| CardTrader (any language) | NM from €0.15 | NM from €0.83 |
Cardmarket updated Oct 31, 2026 · CardTrader updated Oct 31, 2026
Buy and look up
Legality
- standard Not legal
- pioneer Not legal
- modern Not legal
- legacy Not legal
- vintage Not legal
- commander Not legal
- pauper Not legal
- alchemy Not legal
- brawl Not legal
- competitivebrawl Not legal
- duel Not legal
- future Not legal
- gladiator Not legal
- historic Not legal
- oathbreaker Not legal
- oldschool Not legal
- paupercommander Not legal
- penny Not legal
- predh Not legal
- premodern Not legal
- standardbrawl Not legal
- timeless Not legal
- tlr Not legal
Rulings
-
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.
-
If you make an invalid choice, you can still make a valid choice as long as time hasn't expired.
-
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.
-
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.