Whenever Slagstone Refinery or another nontoken artifact you control is put into a graveyard from the battlefield or is put into exile from the battlefield, create a tapped Powerstone token. (It's an artifact with “{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.”)
NM-Mint - $0.10
Lightly Played - $0.10
Moderately Played - $0.10
Heavily Played - $0.10
Damaged - $0.10
NM-Mint Non English - $0.10
Lightly Played Non English - $0.10
Moderately Played Non English - $0.10
Heavily Played Non English - $0.10
Damaged Non English - $0.10
Foil Prices
NM-Mint Foil - $0.40
Lightly Played Foil - $0.40
Moderately Played Foil - $0.40
Heavily Played Foil - $0.30
Damaged Foil - $0.30
NM-Mint Foil Non English - $0.40
Lightly Played Foil Non English - $0.40
Moderately Played Foil Non English - $0.40
Heavily Played Foil Non English - $0.30
Damaged Foil Non English - $0.30