Your search for "Geometer's Arthropod 300" revealed the following:
Geometer's Arthropod - Borderless (Foil) (SOS) from Secrets of Strixhaven, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Michael MacRae Card Text:Whenever you cast a spell with X in its mana cost, look at the top X cards...
Geometer's Arthropod - Borderless (SOS) from Secrets of Strixhaven, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Michael MacRae Card Text:Whenever you cast a spell with X in its mana cost, look at the top X cards of...