Syl is a character from the series [[The Stormlight Archive]]. At first, [[Kaladin]] believes her to be a windspren, but she later reveals that she is actually an honorspren bound to [[Kaladin]], providing him with his Surgebinding powers.
::"I bind things, Kaladin. I am honorspren. Spirit of oaths. Of promises. And of nobility."
::::-"The Way of Kings", Page 913 (hardcover), Chapter 67: "Words"