At the beginning of your upkeep, you may look at the top card of your library. If it's an instant or sorcery card, you may cast it without paying its mana cost.
It chews open Mirrodin's husk and feeds on the outpouring of energy.
Near Mint - $0.40
Near Mint Non-English - $0.40
Lightly Played - $0.40
Lightly Played Non-English - $0.40
Played - $0.30
Played Non-English - $0.30
Heavily Played - $0.30
Heavily Played Non-English - $0.30
Damaged - $0.20
Damaged Non-English - $0.20