Nadir Kraken

The largest and most devastating krakens, nadir krakens, dwell in the deepest ocean trenches. These krakens are unique beings, of which the terrifying Tromokratis (described in the "Mythic Monsters" section of this chapter) numbers among the most feared. When a nadir Kraken breaks free of its sea lock and rises to the surface, continents are redrawn, civilizations collapse, and eras end.