Slipstream Serpent can't attack unless defending player controls an Island. When you control no Islands, sacrifice Slipstream Serpent. Morph {5}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
Near Mint - $100
Lightly Played - $100
Moderately Played - $100
Heavily Played - $100
Damaged - $100
Near Mint Spanish - $100
Lightly Played Spanish - $100
Moderately Played Spanish - $100
Heavily Played Spanish - $100
Damaged Spanish - $100
Foil Prices
Near Mint Foil - $200
Lightly Played Foil - $200
Moderately Played Foil - $200
Heavily Played Foil - $200
Damaged Foil - $100
Near Mint Foil Spanish - $200
Lightly Played Foil Spanish - $200
Moderately Played Foil Spanish - $200
Heavily Played Foil Spanish - $200
Damaged Foil Spanish - $100