It was true; Jasnah really did have a functioning Soulcaster. And a powerful one too. Nine out of ten Soulcasters were capable of a few limited transformations: creating water or grain from stone; forming bland, single-roomed rock buildings out of air or cloth. A greater one, like Jasnah’s, could effectuate any transformation. Literally turn any substance into any other one.
Powered by stormlight? Can just anyone harness stormlight?
