Porcelnik

(Pour-SELL-nick)

In Russia, there is a type of human sorcerer that practices vampiric activities; he is called a porcelnik ("harmer") (see LIVING VAMPIRE). When he dies, the porcelnik's body must be burned to ash on a pyre made of aspen wood or else the body will rise up as a type of vampiric

REVENANT known as an ERETIK.

Source: Melton, Vampire Book, 525