Your search for "voidslime 388" revealed the following:
Voidslime - Retro Frame (Foil) (RVR) from Ravnica Remastered, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Isis Card Text:Counter target spell, activated ability, or triggered ability.
Voidslime (Foil) (DIS) from Dissension, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Jim Murray Card Text:Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)
Voidslime - Art Series (Gold-Stamped Signature) (AOTJ) from Outlaws of Thunder Junction Art Series, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Tyler Crook
Voidslime - Retro Frame (RVR) from Ravnica Remastered, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Isis Card Text:Counter target spell, activated ability, or triggered ability.
Voidslime - Champs and States Promos (Foil) (PCMP) from Champs and States Promos, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Jim Murray Card Text:Counter target spell, activated ability, or triggered ability.