Have any of you used the rules for sacrifices in the Book of Vile Darkness before? Did they seem balanced enough in your game?
I'm looking for a dramatic sacrifice scene among the NPCs next session to get the blood flowing in the PCs a bit. Any suggestions on how I could successfully pull the sacrifice off with a powerful NPC wizard I have without the players feeling completely helpless? I'd like to think they're not just an audience, but the sacrifice to still complete accordingly.