Salvage Titan is a rare Artifact Creature — Golem card from Shards of Alara (ALA), collector number 84. Current market price: $0.50 (foil $13.21), TCGplayer market prices via Scryfall.
You may sacrifice three artifacts rather than pay this spell's mana cost. Exile three artifact cards from your graveyard: Return this card from your graveyard to your hand.