Shallan- Anchored Illusions

She shook her head, then rummaged in her satchel, taking out a small sphere pouch. It would look unremarkable to anyone inspecting it—for they wouldn’t know that she’d transformed it with a small but simple illusion. Though it appeared violet, it was actually white.

The interesting thing about it was not the illusion itself, but how she was powering it. She’d practiced before with attaching an illusion to Pattern, or to a location, but she’d always needed to power it with her own Stormlight. This one, however, she’d attached to a sphere inside the pouch.

She was going on four hours now with the Lightweaving needing no extra Stormlight from her. She’d needed only to create it, then affix it to the sphere. Slowly, the Light had been draining from the sapphire mark—just like a fabrial draining its gemstone. She’d even left the pouch alone in her rooms when going out, and the illusion had still been in place when she’d returned.

Oathbringer Chapter 51