Poetic Ingenuity is a rare Enchantment card from The Lost Caverns of Ixalan (LCI), collector number 161. Current market price: $0.37 (foil $0.38), TCGplayer market prices via Scryfall.
Whenever one or more Dinosaurs you control attack, create that many Treasure tokens. Whenever you cast an artifact spell, create a 3/1 red Dinosaur creature token. This ability triggers only once each turn.