Sadistic and cunning, Thresh Thresh is an ambitious and restless spirit of the Shadow Isles Crest icon Shadow Isles. Once the custodian of countless arcane secrets, he sought a power greater than life or death, and now sustains himself by tormenting and breaking others with slow, excruciating inventiveness. His victims suffer far beyond their brief mortal coil as Thresh wreaks agony upon their souls, imprisoning them in his unholy lantern to torture for all eternity.