It's actually quite a balance Spirit. Though the Right Leg Spirit Bone may have too wide of a range afterall Xiao Wu's Teleportaiton Ability and Yuhao's Spirit Bone Teleportation Ability only amounts to upto probably a 10 meter Radius. The Berserk State doesn't allow any back lash? You should state how long it would last or else it be quite a bit OP considering you could go and activate that mode for quite a few times and still receive no Back lash. Well other than the Spirit Bones, I think the Spirit is actually quite fine.