Hey, that means I get to bake a spooky cake! (What's spooky is the ingredients that went in that you don't know about, mwa-ha-ha!)
Fear not, I have spooky cake experience. I've made an all-black birthday cake. It was hard to get the frosting truly black, and awesome when I did. Alas, I could not find those little silver balls for decorating it as a punk cake. Yours will be easier--blood I can do.
Maryn, wondering if the silver balls were, like, mercury-dipped or otherwise toxic. because that would explain her mental state