|Abilities||Nahel bond, Bondsmith magic|
|Featured In||The Stormlight Archive|
”There is ... a third sibling. They are not with us.— Stormfather
A series of related records left by an Elsecaller in drawer 1-1 of the Urithiru gem archive link the Sibling to the health of the tower city. The entries relate the decline of the tower's functionality (particularly with respect to habitation failures) to the withdrawal of the Sibling. The author argues that the spren's disappearance was neither intentional nor a result of internal strife among the Knights Radiant. The cause of the Sibling's disappearance is unknown.
”Something is happening to the Sibling. I agree this is true, but the division among the Knights Radiant is not to blame. Our perceived worthiness is a separate issue.— The third zircon in drawer 1-1 of the Urithiru Gem Library
In the millenia since the abandonment of Urithiru and the Recreance the Sibling has been "slumbering" according to the Stormfather, who refuses to reveal more information because of the way his siblings were harmed by mankind in the past.
It has yet to be reviewed.