Quote from : The Battle of the Labyrinth Book

I slashed a wide arc with Riptide and vaporized the entire front row of monsters. Back off!” I yelled at the rest, trying to sound fierce. Behind them stood their instructor—a six-foot-tall telekhine with Doberman fangs snarling at me. I did my best to stare him down. New lesson, class,” I announced. “Most monsters will vaporize when sliced with a celestial bronze sword. This change is perfectly normal, and will happen to you if you don’t BACK OFF!