The "Blood Sacrifice: The Thaumaturgy Companion" by Ari Marmell and Dean Shomshak is a role-playing game supplement published by White Wolf Publishing in 2002. This trade paperback book, measuring 10.5 inches in length, 8.7 inches in width, and 0.3 inches in height, contains 96 pages filled with illustrations by artists Leri and David. The book is written in English and falls under the genre of games and activities, specifically catering to fans of role-playing and fantasy worlds within the Vampire: The Masquerade universe.