Sunforger is a rare Artifact — Equipment card from Ravnica: City of Guilds (RAV), collector number 272. Current market price: $4.15 (foil $35.56), TCGplayer market prices via Scryfall.
Equipped creature gets +4/+0. {R}{W}, Unattach this Equipment: Search your library for a red or white instant card with mana value 4 or less and cast that card without paying its mana cost. Then shuffle. Equip {3}