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.
Near Mint - $300
Lightly Played - $200
Moderately Played - $200
Heavily Played - $200
Damaged - $200
Near Mint Spanish - $300
Lightly Played Spanish - $200
Moderately Played Spanish - $200
Heavily Played Spanish - $200
Damaged Spanish - $200
Foil Prices
Near Mint Foil - $1.500
Lightly Played Foil - $1.200
Moderately Played Foil - $1.000
Heavily Played Foil - $900
Damaged Foil - $800
Near Mint Foil Spanish - $1.500
Lightly Played Foil Spanish - $1.200
Moderately Played Foil Spanish - $1.000
Heavily Played Foil Spanish - $900
Damaged Foil Spanish - $800