Mantle

A Mantle is essentially the power of a position. First mentioned in Summer Knight. and becomes relevant again in Cold Days.

Description
A mantle is the power of a role or the position worn by an individual. When the person or being wearing it dies, it passes to another.

About / Details

 * The person in Mantle is basically an interchange part. The mantle changes whoever wears it. They are expendable.
 * The changes start with strong impulses and intense emotions and then builds and doesn't stop.

In the Series (Events)
In Summer Knight, Aurora's mantle passed to Lily after Harry Dresden killed her on the Stone Table. As Lilly said: the "power flowed onto the nearest Summer Vessel".

In Cold Days, Bob explains to Harry that it doesn't makes sense that Mab would want Maeve killed since the Mantle would simply pass on to another who would become another "Maeve" since the Mantle changes that person who wears it.