The Three Sisters: Local History Applies to Isingbal, Shar, Willowbrook, Northwarden, and Salicka. The Three Sisters are 3 small volcanic mountain islands in the Tainted Seas. These islands have been the cause of a great deal of shipwrecks because of their volcanic activity and surrounding reefs. Some sailors however claim that the songs of sirens may be heard carrying in the winds beckoning men to their deaths on the reefs. Often ships travelling past the Three Sisters will have a set of female bards on board to counteract any siren's songs heard in the winds.