“Basics first,” Pryderin said, clearing a half a dozen balls of yarn from a low table. He tapped it with one long finger and a diagram popped up. It looked like a hologram, but the quality was like nothing she’d ever seen. It looked like a tree, like Yggdrasil a little bit, but it was all made up of spirals and swirls that looked like smoke. “This is the planar map; you can see how they all flow into each other and into the main trunk.” He reached out and tapped one of the foggy ...