Slipstream Serpent (TSR)

Slipstream Serpent  (8) 
Creature — Serpent (6/6)
Slipstream Serpent can't attack unless defending player controls an Island.
When you control no Islands, sacrifice Slipstream Serpent.
Morph  (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)