Harbor Serpent Tweet Light Play, English, 26 In stock $0.27 Light Play, Japanese, 1 In stock $0.27 Sell This Product 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: 56/249 Set Name: Magic 2012