Horizon Spellbomb is a common Artifact card from Scars of Mirrodin (SOM), collector number 165. Current market price: $0.08 (foil $0.42), TCGplayer market prices via Scryfall.
{2}, {T}, Sacrifice this artifact: Search your library for a basic land card, reveal it, put it into your hand, then shuffle. When this artifact is put into a graveyard from the battlefield, you may pay {G}. If you do, draw a card.