Geometer's Arthropod
{G}{U}Creature — Fractal Crab1/4
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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.
What it does
Tagged as Card draw — the jobs the deck report counts it toward.
Official rulings
- 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)
- 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)
Printings & prices
Every set Geometer's Arthropod has been printed in, with the art, the finishes and the market price of each — the headline price above is the cheapest of these.
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