Thaumaturgy Paths. The problem with classifying anything as blood magic is the presentation.
There are scores of variations on blood magic, some of which closely resemble regular disciplines and may bear little semblance to the reified view of how blood magic works. Basically, blood magic has several requirements. 1) Forces will on world, changing behavior of environment to match own desires 2) The expenditure of blood and/or willpower 3) Utilizes arcane formulae 4) Frequently must be researched to be learned 5) Cannot be above level 5 The main difference is that blood magic taps into the innate force in the magically-infused blood of Kindred to perform magic, instead of relying on innate powers.\ Examples: Tzimisce Koldunism, Assamite Sorcery, Setite Sorcery, Giovanni Necromancy.
Combo Disciplines - Silent Eve. Revised Guide Vampire Combo Disciplines. S Gateway to the World of Darkness.