For a God of Knowledge, this youngling shows a remarkably poor grasp of history!Giant walls of ice were built to keep them at bay.
UndineUndine's Gift
Undine takes possession of the oceans.
In the first instant – the poison from the Onyx of Destruction is concentrated and spat into the void of the Worldbreaker, the ice around Nor Pupae is melted, and walls of ice raised around the World Breaker’s Abyss.
.....
Undine turns away, and all his remaining power is poured into the walls of ice protecting the seas from the Abyss.