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.
NM-Mint - $13.20
Lightly Played - $12.50
Moderately Played - $11.80
Heavily Played - $10.50
Damaged - $8.60
NM-Mint Non English - $13.20
Lightly Played Non English - $12.50
Moderately Played Non English - $11.80
Heavily Played Non English - $10.50
Damaged Non English - $8.60