Reckless Handling is a uncommon Sorcery card from March of the Machine: The Aftermath (MAT), collector number 19. Current market price: $0.34 (foil $0.33), TCGplayer market prices via Scryfall.
Search your library for an artifact card, reveal it, put it into your hand, shuffle, then discard a card at random. If an artifact card was discarded this way, Reckless Handling deals 2 damage to each opponent.