Your search for "Mammoth Spider 181" revealed the following:
Mammoth Spider (Foil) (M20) from Core Set 2020, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Lars Grant-West Card Text:Reach (This creature can block creatures with flying.)
Mammoth Spider (M20) from Core Set 2020, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Lars Grant-West Card Text:Reach (This creature can block creatures with flying.)