Sunforger is a rare Artifact — Equipment card from Modern Masters 2015 (MM2), collector number 232. Current market price: $5.67 (foil $12.10), 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}