Lithobraking is a uncommon Instant card from Edge of Eternities (EOE), collector number 142. Current market price: $0.20 (foil $0.27), TCGplayer market prices via Scryfall.
Create a Lander token. Then you may sacrifice an artifact. When you do, Lithobraking deals 2 damage to each creature. (A Lander token is an artifact with "{2}, {T}, Sacrifice this token: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.")