
Her power comes from her bond with her spren, Pattern. He is a Windrunner and his power comes from his bond with his spren, Syl.

One can't use Stormlight to power Awakening very easily, but if one still has Breaths, one can use and reclaim them. Ī Returned can feed off of Stormlight very easily. People bearing Stormlight are more difficult to Lash, something Szeth is coming to understand as a Skybreaker squire. There is no toxic level for Stormlight when one is in a storm, one cannot get to the point where one has too much. Stormlight can be used by Elsecallers to Soulcast. Stormlight can be used by Lightweavers to create illusions with light. Stormlight can be used by Windrunners to perform the three types of Lashings (Basic, Full, and Reverse). However, Stormlight can be used by any Surgebinder to increase battle reflexes, reactivity, speed, and strength within the physical limits of their bodies. Each order possessed different abilities. Stormlight is used by all Surgebinders to perform certain feats, which are akin to those performed by the Knights Radiant, which had ten orders. Stormlight is not easy to get off of Roshar, and is technically keyed. The strange refractive properties of Invested Light are related to the backward shadows in the Cognitive Realm and of Axies the Collector. But the Stormlight itself is different from the illumination it radiates. While captured, the illumination given off by Stormlight behaves like sunlight: it can be split by a prism, and diffuses the farther it gets from its source. It flows through one's body, reknitting bones, repairing organs. Stormlight has the power to heal, though such healing only speeds up and slightly enhances the natural healing process depending on how much of it is used. It behaves like a liquid when drawn from a full gemstone into an empty one, mimicking osmosis. Stormlight is not simply illumination, as it gives off illumination.

Stormlight leaks quickly when held by a Surgebinder or infused into an object other than a gemstone, though persons can slow the leakage by holding their breath (which they can do for an extended time while holding the light).

Infused spheres can also be obtained from money exchangers. Usually, those gemstones kept in spheres (the currency on Roshar), can be infused with Stormlight by leaving them outside during a highstorm. Gemstones are much better at holding Stormlight than other objects because the light can remain within them for weeks. Stormlight is a source of light and power and is used to power the technology of Roshar. Stormlight is a vibration and radiant energy given off by highstorms that can be stored in gemstones and then later used by Surgebinders.
