Tawnos, the Toymaker is a rare Legendary Creature — Human Artificer card from The Brothers' War Promos (PBRO), collector number 222s. Current market price: — (foil $1.52), TCGplayer market prices via Scryfall.
Whenever you cast a Beast or Bird creature spell, you may copy it, except the copy is an artifact in addition to its other types. (The copy becomes a token.)