Poetic Ingenuity is a rare Enchantment card from The Lost Caverns of Ixalan Promos (PLCI), collector number 161p. Current market price: $0.33 (foil $0.49), 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.