The rune of protection, concealment, and opportunity? The professor meant, she actually had to try and remember which rune that was? "I think that is the algiz rune..." She wasn't quite sure, but she was positive that...well no, she wasn't quite sure. It could've been that, but then again, there were other runes that had a good chance of matching that description. Others said it so it must be true! "It's usually represented by the color of gold."

Too bad it wasn't silver.