I would like to have seen this written up within the core rulebook, but aside from that it is a worthy addition to the set. There is plenty here to inspire an already extensive magic system. Spirit Magic always played a strong part in my RuneQuest haydays back in the 80's. This addition doesn't fail to deliver an indepth look into the art of Shamanism and their trade of roaming souls on the Spirit Plane.
[4 of 5 Stars!]