Blood Magic protects objects from being accessed unless the person is from the bloodline of the caster. Most blood magic is activated passively, but is cast using a ritual.
Harry Potter (c) belongs to J.K. Rowling and Warner Brother's Inc. This is a fanfiction and is not monetized, thus falling under Fair Use. All original additives to the copyrighted material belongs to E. J. Harville, alias Ukallii.
