Buffy the Vampire Slayer (1998-2003) #38

Plot

Giles explains that the Eidu are a sect of monk-like vampires who worship the Master. They will use their amulet to draw the Master's spirit out of the spirit dimension so it can enter a sacrificial body. Willow, Anya and Tara come up with a plan to stop the Eidu. When the gang reaches the site of the old high school they find that Xander is the sacrificial body. Buffy stakes Yuki, Willow & Tara prevent the Master's astral body from entering Xander, and Giles tries to kill the Master's astral body with a vapour blade. He loses the blade, and so Dawn kills the Master's astral body.