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.)
NM-Mint - $0.25
Lightly Played - $0.23
Moderately Played - $0.20
Heavily Played - $0.17
Damaged - $0.13
NM-Mint Non English - $0.25
Lightly Played Non English - $0.23
Moderately Played Non English - $0.20
Heavily Played Non English - $0.17
Damaged Non English - $0.13
Foil Prices
NM-Mint Foil - $0.25
Lightly Played Foil - $0.23
Moderately Played Foil - $0.20
Heavily Played Foil - $0.17
Damaged Foil - $0.13
NM-Mint Foil Non English - $0.25
Lightly Played Foil Non English - $0.23
Moderately Played Foil Non English - $0.20
Heavily Played Foil Non English - $0.17
Damaged Foil Non English - $0.13