Could the sea of black spheres be a Shardpool or the mind of a Shardholder? Seeing As Shadesmar Encompasses the Entire cosmere I doubt Brandon world make it so Shallan could soulcast something in another ShardWorld From Roshar, so I doubt that these spheres are individual minds…unless Shadesmar is geographically different across the cosmere, dependant on which shards interact and constrains the minds of that ShardWorld to that form of Shadesmar. If I'm correct, which I'm not, then you mind, in black sphere form, will remain in its original Shadesmar…Yess I'm off topic, I think, fortunately I'm done