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Decktrove
Geometer's Arthropod
SOS · Secrets of Strixhaven #191 · Rare · released 2026-04-24
{G}{U}
Creature — Fractal Crab
Whenever you cast a spell with {X} 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
Geometer's Arthropod is a rare green-blue creature from Secrets of Strixhaven (2026). It has been printed 3 times across 2 sets. Recent market prices range from $0.29 to $1.14 depending on printing and finish. It is legal in Standard, Pioneer, Modern, Legacy, Vintage, Commander, Oathbreaker, Historic, Brawl and Penny Dreadful.
USD$0.26
USD Foil$0.34
Format legality
Where you can play Geometer's Arthropod in sanctioned and popular formats.
StandardLegal
PioneerLegal
ModernLegal
LegacyLegal
VintageLegal
CommanderLegal
PauperNot legal
OathbreakerLegal
HistoricLegal
BrawlLegal
Penny DreadfulLegal
All printings (3)
Prices range from $0.29 to $1.14 across finishes. Cheapest printing: Secrets of Strixhaven at $0.29.
| Set | No. | Rarity | Price | Foil |
|---|---|---|---|---|
| Secrets of Strixhaven Promos | 191p | Rare | $0.40 | $1.12 |
| Secrets of Strixhaven | 300 | Rare | $0.74 | $1.14 |
| Secrets of Strixhaven This page | 191 | Rare | $0.29 | $0.33 |
More from Secrets of Strixhaven
Rulings
Official rulings from Wizards of the Coast (2).
- 2026-03-20In 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 {X}, 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.
- 2026-03-20Geometer'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.
Frequently asked questions
Is Geometer's Arthropod legal in Commander?
Yes — Geometer's Arthropod is legal in Commander (EDH).
What formats is Geometer's Arthropod legal in?
Geometer's Arthropod is legal in Standard, Pioneer, Modern, Legacy, Vintage, Commander, Oathbreaker, Historic, Brawl and Penny Dreadful.
How many times has Geometer's Arthropod been printed?
Geometer's Arthropod has been printed 3 times across 2 sets.
What is the cheapest printing of Geometer's Arthropod?
The cheapest printing is Secrets of Strixhaven (#191) at about $0.29.
Who illustrated Geometer's Arthropod?
This printing of Geometer's Arthropod was illustrated by Joe Slucher.