When Goblin Engineer enters the battlefield, you may search your library for an artifact card, put it into your graveyard, then shuffle. {R}, {T}, Sacrifice an artifact: Return target artifact card with mana value 3 or less from your graveyard to the battlefield.
Near Mint - $18.80
Lightly Played - $17.00
Played - $13.20
Heavily Played - $11.30
Damaged - $9.40
Near Mint Non-English - $18.80
Lightly Played Non-English - $17.00
Played Non-English - $13.20
Heavily Played Non-English - $11.30
Damaged Non-English - $9.40