You may choose not to untap Giant Oyster during your untap step. {T}: For as long as Giant Oyster remains tapped, target tapped creature doesn't untap during its controller's untap step, and at the beginning of each of your draw steps, put a -1/-1 counter on that creature. When Giant Oyster leaves the battlefield or becomes untapped, remove all -1/-1 counters from the creature.
NM-Mint - $1.00
Lightly Played - $0.90
Moderately Played - $0.80
Heavily Played - $0.70
Damaged - $0.50
NM-Mint Non English - $1.00
Lightly Played Non English - $0.90
Moderately Played Non English - $0.80
Heavily Played Non English - $0.70
Damaged Non English - $0.50
Foil Prices
NM-Mint Foil - $1.30
Lightly Played Foil - $1.20
Moderately Played Foil - $1.10
Heavily Played Foil - $1.00
Damaged Foil - $0.70
NM-Mint Foil Non English - $1.30
Lightly Played Foil Non English - $1.20
Moderately Played Foil Non English - $1.10
Heavily Played Foil Non English - $1.00
Damaged Foil Non English - $0.70