Dreamwinder
{3}{U}
Creature -- Serpent
4/3
~this~ can't attack unless defending player controls an Island.
{U}, Sacrifice an Island: Target land becomes an Island until end of turn.
Kukemssa Serpent
{3}{U}
Creature -- Serpent
4/3
~this~ can't attack unless defending player controls an Island.
{U}, Sacrifice an Island: Target land an opponent controls becomes an Island until end of turn.
When you control no Islands, sacrifice ~this~.
Lochmere Serpent
{4}{U}{B}
Creature -- Serpent
7/7
Flash
{U}, Sacrifice an Island: ~this~ can't be blocked this turn.
{B}, Sacrifice a Swamp: You gain 1 life and draw a card.
{U}{B}: Exile five target cards from an opponent's graveyard. Return ~this~ from your graveyard to your hand. Activate only as a sorcery.