That would result in a twist ending. An act of such sheer pure evil would instantly catalyse his Tom Riddleness and transform him into Voldemort v2, complete with snake face and glowing red eyes.
But the reason I suggest air is that once it disperses it cannot be Finite Incantatemed or Reparoed or targeted by any magical effect we know of. We don’t know if Philosopher’s Stone transfigurations are permanent in every sense or just in the duration sense, and you do not want any possibility of someone bringing Voldemort back with a first-year spell like Finite Incantatem.
That still wouldn’t be safe. The possibility of using “massed Finite Incantatem”, as raised by Quirrell, suggests that low-level casters can dispel high-level ones’ spells, either by combining power (circumstantial help modifier?) or by getting a natural 20. And matters being as they are, if Voldemort gets transfigured, odds are good that it will be done by Harry (who has a low caster level).
That would result in a twist ending. An act of such sheer pure evil would instantly catalyse his Tom Riddleness and transform him into Voldemort v2, complete with snake face and glowing red eyes.
But the reason I suggest air is that once it disperses it cannot be Finite Incantatemed or Reparoed or targeted by any magical effect we know of. We don’t know if Philosopher’s Stone transfigurations are permanent in every sense or just in the duration sense, and you do not want any possibility of someone bringing Voldemort back with a first-year spell like Finite Incantatem.
I would expect Finite Incantatem to work like Dispel Magic and require a caster level check.
That still wouldn’t be safe. The possibility of using “massed Finite Incantatem”, as raised by Quirrell, suggests that low-level casters can dispel high-level ones’ spells, either by combining power (circumstantial help modifier?) or by getting a natural 20. And matters being as they are, if Voldemort gets transfigured, odds are good that it will be done by Harry (who has a low caster level).