Iron Man, Titan of Innovation is a mythic Legendary Artifact Creature — Human Hero card from Secret Lair Drop (SLD), collector number 1731. Current market price: $18.61, 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.