Spell Receipt

It says, "I hereby acknowledge that Vangreef's debt to me is paid." It has an elven signature symbol and the letters "SS". Then at the bottom is another note by the author: "Don't waste that spell, Vangreef. Even if you could afford a second casting, I can't recast it until the moon waxes anew. Be smart and fast or your whole gang WILL die down there. And nobody will be able to rescue you."

Spell Receipt is a Mac Guffin item in Project Gorgon.