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Geometer's Arthropod

GreenBlue

3 printings listed in our catalog, from newest to oldest.

Geometer's Arthropod, Secrets of Strixhaven Promos printing
Secrets of Strixhaven Promos PSOS · No. 191p 2026-04-24

Card text

{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.
1 / 4
"Creatures that have survived blood-soaked millennia should not be underestimated." —Nev, dean of substance
EDHREC rank #9780 Rare Not on the Reserved List
Seen in store
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The 3 printings

All, with their prices ↓

Standard ✓ Legal
Pioneer ✓ Legal
Modern ✓ Legal
Legacy ✓ Legal
Vintage ✓ Legal
Pauper ∅ Not legal
Commander ✓ Legal
Oathbreaker ✓ Legal
Brawl ✓ Legal
Historic ✓ Legal
Timeless ✓ Legal
Alchemy ✓ Legal
Explorer ∅ Not legal
Gladiator ✓ Legal
Penny ✓ Legal
Duel ✓ Legal

Official rulings

2 rulings · in English, source Scryfall

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 {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.

2026-03-20 · Wizards of the Coast

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.

2026-03-20 · Wizards of the Coast

All printings

Geometer's Arthropod, Secrets of Strixhaven printing
Secrets of Strixhaven
SOS · #300
Rare
Tapt's Canadian calculation. How to read these prices
Face to Face Games · Condition LP