The Sacrifice of Three was a ritual which, once performed successfully, would open the Hellmouth and bring about the end of the world. The Vahrall Demon Behemoth, alongside two of his species, appeared in Sunnydale in an attempt to perform the ritual and open the Hellmouth.
- Blood of a male human
- Bones of a child
- The Word of Valios
- Sacrifice of the three performers of the ritual