"Well that's obvious," He said, rubbing his hands on the table, "But how do they work. Why does it have to be a shard blade? And is it because it has to be a spren? Why not use a gem with a spren in it to unlock an oath gate? And why do the two spren appear as they do in the physical realm? How do they look in the spiritual realm? Is an oath gate different than those things that that one grumpy dude I saw can do? And, perhaps, does it have anything to do with the random warp that brought me to this universe?"