Poetic Ingenuity is a rare Enchantment card from The Lost Caverns of Ixalan (LCI), collector number 377. Current market price: $0.46 (foil $0.39), 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.