((Let's try something I saw in the movie Sky High! lol
When they are playing "save the innocent" and the guy with superspeed runs around the fire guy to deprive him of oxygen... I have no idea how that would work in real life (or Volturi RPG life, but it put out the fire in the movie
Beatrix watched as Matilda stabbed the fire with incredulous eyes, how was a knife going to do anything against fire?
She had a new plan, one that had just occurred to her: fire needed oxygen to subsist.
Still standing next to Athenodora, she lifted her shield and became visible and audible again.
"I have an idea!" she paused as everyone reacted to her sudden appearance. "Run fast around it and create a void. It will suck out the oxygen!"
She couldn't do anything until Matilda backed away, and maybe the knife was
in fact useful and her plan wouldn't be needed.