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 - $7.20
Lightly Played - $5.80
Moderately Played - $5.10
Heavily Played - $4.30
Damaged - $3.60
Near Mint Spanish - $7.20
Lightly Played Spanish - $5.80
Moderately Played Spanish - $5.10
Heavily Played Spanish - $4.30
Damaged Spanish - $3.60