Isn Blood magic just another name for Thaumaturgy?
Actually … No. Part of the confusion is White-wolf’s habit of using the term “thaumaturgy” as a name for all forms of Blood magic. Every vampire who learned some form of blood magic, was listed as having acquired Thaumaturgy. As the game developed several separate and distinct traditions of blood magic were revealed to exist. However, due to limited game mechanics, their spells were defined using the Tremere’s Thaumaturgical paths and rituals.