Black Magic is Not a Myth in Articles by Aleister Crowley.

“In the congregational form of the Black Mass the priest, having finished his abominations—these are, quite frankly, indescribable—scatters the fragments of the Host on the floor, and the assistants scramble for the soiled fragments, the possession of which, they believe, will allow them to work their petty and malicious designs.” [via, also]

Consider also:

  1. “The ceremony is a parody of the orthodox Mass, with blasphemous interpolations.”
  2. My Mer-Ka-Ba
  3. “The ‘Black Mass’ is a totally different matter. I could not celebrate it if I wanted to, for I am not a consecrated priest of the Christian Church. The celebrant must be a priest, for the whole idea of the practice is to profane the Sacrament of the Eucharist. Therefore you must believe in the truth of the cult and the efficacy of its ritual.”
  4. “There are many ways of abusing the Sacrament. One of the best known of which is the ‘Mass of Saint Secaire,’ the purpose of which is to cause an enemy to wither away.”
  5. “There is an altar, but the candles are of black wax. The crucifix is fixed the head downwards.”