Iron Man, Titan of Innovation is a mythic Legendary Artifact Creature — Human Hero card from Marvel Universe (MAR), collector number 91. Current market price: $8.13 (foil $16.73), TCGplayer market prices via Scryfall.
Flying, haste Genius Industrialist — Whenever Iron Man attacks, create a Treasure token, then you may sacrifice a noncreature artifact. If you do, search your library for an artifact card with mana value equal to 1 plus the sacrificed artifact's mana value, put it onto the battlefield tapped, then shuffle.