Blood

"Blood is life, lackbrain. Why do you think we eat it? It's what keeps you going, makes you warm, makes you hard, makes you other than dead."

- Spike to Xander Harris on the nature of blood



Blood was a specialized bodily fluid that delivered necessary substances to a body's cells – such as nutrients and oxygen – and transported waste products away from those same cells. It was found in most beings, including humans.

Vampires were well known to feed on the blood of mammals, and it was a common ingredient in numerous magic spells and rituals. The blood of Mohra demons possessed regenerative properties.

Uses in magic

 * A central ingredient in resurrection spells
 * As the human form of The Key, Dawn Summers' blood possessed the power to tear down the barriers between Earth and other dimensions when used in the proper ritual.
 * Opening the Seal of Danzalthar.
 * The blood of the Slayer was the only known cure for the Killer of the Dead, a poison specifically designed to kill vampires.
 * Mohra demon blood possessed potent healing properties.
 * The Sisterhood of Jaro Hull drank Connor's blood as part of a ritual to enhance their strength.
 * Flesh Magic