Sunforger is a rare Artifact — Equipment card from Secret Lair Drop (SLD), collector number 2381. Current market price: $11.50 (foil $15.30), 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}