Geometer's Arthropod
Secrets of Strixhaven · #191 · Rare
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Creature — Fractal Crab
Whenever you cast a spell with 
in its mana cost, look at the top X cards of your library. Put one of them into your hand and the rest on the bottom of your library in a random order.
"Creatures that have survived blood-soaked millennia should not be underestimated."
—Nev, dean of substance
1/4
Card details
- Shown printing
- Secrets of Strixhaven (SOS)
- Artist
- Joe Slucher
- Color identity
- Green, Blue
- Colors
- Green, Blue
- Mana value
- 2
- First released
- April 24, 2026
- Printings
- 3
- EDHREC rank
- #9688 on EDHREC
- Market price
- $0.33 (cheapest printing, updated weekly)
Legality
- StandardLegal
- PioneerLegal
- ModernLegal
- LegacyLegal
- VintageLegal
- CommanderLegal
- PauperNot legal
- BrawlLegal
- Standard BrawlLegal
- HistoricLegal
- TimelessLegal
- AlchemyLegal
- GladiatorLegal
- OathbreakerLegal
- Pauper CommanderNot legal
- Duel CommanderLegal
- PreDHNot legal
- PremodernNot legal
- Old SchoolNot legal
- Penny DreadfulLegal
- FutureLegal
Rulings (2)
Geometer's Arthropod's ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered or otherwise leaves the stack without resolving. In that case, use the value of X as that spell last existed on the stack to determine the value of X for Geometer's Arthropod's ability.
In some rare cases, the value of X for the spell on the stack may be different than the value that was chosen when you cast it. For example, if you control Unbound Flourishing (an enchantment with "Whenever you cast a permanent spell with a mana cost that contains
, double the value of X.") the value of X may have been doubled. In those cases, use the value of X as the spell exists on the stack at the time Geometer's Arthropod's ability resolves to determine the value of X for Geometer's Arthropod's ability.
All printings
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Card data and images from Scryfall.