Automated Assembly Line is a rare Artifact card from Fallout (PIP), collector number 10. Current market price: $0.26 (foil $0.40), TCGplayer market prices via Scryfall.
Whenever one or more artifact creatures you control deal combat damage to a player, you get {E} (an energy counter). Pay {E}{E}{E}: Create a tapped 3/3 colorless Robot artifact creature token.