elphamebound:

The act of Reddening is legendary and perhaps even Palaeolithic in origin, it is the art of giving life to an inanimate object through the use of blood or a blood-like substance, or can be used as part of a rite for Calling a Spirit Back to  objects such as bones (total coverage is not always needed, sometimes I just redden a small part of the skull of smaller animals, such as my Crows), but it can also be used as an act to sanctify and make an object sacred.

Reddening the Bones…