Your search for "Acidic Slime 59" revealed the following:
Marauding Mutagen // Acidic Slime (TMC) from Teenage Mutant Ninja Turtles Eternal, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Michele Giorgi Card Text:DeathtouchWhen this creature enters, destroy target artifact, enchantment, or land.
Acidic Slime - C18 Reprint (PLST) from The List, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Karl Kopinski Card Text:DeathtouchWhen Acidic Slime enters the battlefield, destroy target artifact, enchantment, or land.
Acidic Slime - Prime Slime (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Wizard of Barge Card Text: Prime SlimeDeathtouchWhen Acidic Slime enters the battlefield, destroy target artifact, enchantment, or land.
Achichi @Ignister - OP28-EN019 - Common from OTS Tournament Pack 28, available at 401 Games Canada. Rarity: Common Card Text:If this card is Normal or Special Summoned: You can add 1 Level 4 or lower "@Ignister" monster from your Deck...