The Nightmare Essence on Rishar

"Midnight essence in all its different forms looks for a pattern, a model. It often takes a cue from its creator or host," she says. "I feel like this is not, you know, not something based in a thing that we know of in our world, but is cosmere specific." She asks: Is it an aether that has traveled to Rishar and then was unmade? Or maybe just the quote unmaking?"