Mouser Foundry is a common Artifact card from Teenage Mutant Ninja Turtles (TMT), collector number 96. Current market price: $0.13 (foil $0.22), TCGplayer market prices via Scryfall.
When this artifact enters or leaves the battlefield, create a 1/1 colorless Robot artifact creature token. {4}{R}, Sacrifice this artifact: It deals 3 damage to target creature.