As an additional cost to cast this spell, sacrifice an artifact. Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.
Near Mint - $1.30
Lightly Played - $1.10
Moderately Played - $0.90
Heavily Played - $0.80
Damaged - $0.70
Near Mint Spanish - $1.30
Lightly Played Spanish - $1.10
Moderately Played Spanish - $0.90
Heavily Played Spanish - $0.80
Damaged Spanish - $0.70