Harbor Serpent Tweet Moderate Play, English, Renfrew, 7 in stock CAD$ 0.28 Details Color: Blue Card Text: Islandwalk (This creature is unblockable as long as defending player controls an Island.)Harbor Serpent can't attack unless there are five or more Islands on the battlefield. Rarity: C Cost: 4UU Pow/Tgh: 5/5 Card Type: Creature - Serpent Artist: Daarken Name: Harbor Serpent Finish: Regular Card Number: 53/249 Set Name: Magic 2013