
Whenever you cast a noncreature spell, counter that spell. Create a number of 1/1 blue Merfolk creature tokens equal to the amount of mana spent to cast that spell.
Grandmother Goby has 1 printing, first in Mystery Booster Commander Edition (2026). EDHREC ranks it #25,802 among Commander cards. It appears most in Taigam, Ojutai Master decks (17 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.