Your search for "Rapid Prototyper 200" revealed the following:
Rapid Prototyper (UST) from Unstable, available at 401 Games Canada. Rarity: Mythic Rare Finish: Normal Artist: Jason Felix Card Text:Whenever you crank Rapid Prototyper, create a X/X colorless contstruct artifact creature token, where X is the number of artifacts you...
Rapid Prototyper (Foil) (UST) from Unstable, available at 401 Games Canada. Rarity: Mythic Rare Finish: Foil Artist: Jason Felix Card Text:Whenever you crank Rapid Prototyper, create a X/X colorless contstruct artifact creature token, where X is the number of artifacts...