Kraken

"A Kraken dreams of casting its tentacles into the heavens and strangling that which birthed it, and when its dream exceeds its reach, it settles for the occasional passing ship."
-Malfeore Serrang
  Beneath the waves, the Kraken sleeps for untold ages, awaiting some fell sign or calling. Land-born mortals who sail the open sea forget the reasons their ancestors dreaded the ocean, even as the races of the deep ignore strange gaps in their histories when their civilizations nearly vanished after the appearance of the tentacled horror.   Whole nations quake in dear when the Kraken emerges from its dark demesne, and even in the middle of the deepest oceans, storms rise or abate according to its will. The Kraken is a primeval force that obliterates the greatest achievements of civilization as if they were castles in the sand. Its devastating attacks can destroy ocean trade and halt communication between coastal cities.   An ominous darkness presages a Kraken's attack, and a cloud of inky poison colors the water around it. Galleons and warships vanish when its tentacles uncoil from the deep, the Kraken breaking their masts like kindling before drawing down ships and crew.   Not even landlocked surface dwellers are safe from a Kraken's wrath. Krakens can breathe air as easily as water, and supposedly some have been reported to crawl up rivers and nest in freshwater lakes, destroying cities and towns along the way. Adventurers tell of these monsters lairing in the ruins of lakeside citadels, their tentacles twines around leaning towers of disintegrating stone...