Sacrifice an artifact. If you do, search your library for an artifact card. If that card's converted mana cost is less than or equal to the sacrificed artifact's converted mana cost, put it onto the battlefield. If it's greater, you may pay {X}, where X is the difference. If you do, put it onto the battlefield. If you don't, put it into its owner's graveyard. Then shuffle your library.
Near Mint - $363.400
Lightly Played - $290.700
Moderately Played - $254.400
Heavily Played - $218.000
Damaged - $181.700
Near Mint Spanish - $363.400
Lightly Played Spanish - $290.700
Moderately Played Spanish - $254.400
Heavily Played Spanish - $218.000
Damaged Spanish - $181.700