Serpent of the Endless Sea

Змей Бескрайнего Моря (Serpent of the Endless Sea) (ru)

Creature - Serpent | Power/Toughness: * / * (CMC 5)
Serpent of the Endless Sea's power and toughness are each equal to the number of Islands you control.
Serpent of the Endless Sea can't attack unless defending player controls an Island.