As a starting point, this is in the campaign background: " The Janasibs are a cluster of five islands, the largest of which is home to a dormant volcano. Within its crater rests a landlocked lake of salt. Numerous pirates have taken shelter along the shores of the Janasibs, wary of the sea hags in the shallows and sylvan creatures which inhabit the plush forests. Aware of their alliance with local merfolk, the Wardens of the Janasibs have sought council with the Matriarchy of Komal. Many of the merrow which inhabit these waters have, of late, displayed magical powers. Though typically encountered in freshwater, these oceangoing creatures have become known as merrow mages. "