The mana cost for incendio is probably much higher than a thin sheet of transfig.
I think that incendio simply forms a blowtorch or igntes the outside of objects. Weaponized partial transfig will ALWAYS be more powerful than first-year spells at a first-year mana supply. Partial transfig can slice things up, which is what Harry needed to do.
I was thinking it would work as effectively because of the fire weakness thing and Harry shouldn’t be magically depleted yet. Also it would be a lot safer than transfiguring sulfuric acid. Although it’s possible the troll was enchanted to make it fire resistant and that Harry frankly didn’t care whether he was violating the rules of transfiguration, and merely was worried about speed, but I’m inclined to think incendio would be faster.
Or maybe it’s not a good idea to cast incendio while the tip of your wand is in a very enclosed location (for instance due to gases that you expect to be released).
Or it’s maybe that that the transfiguration requires no wand movements (reference: look at the setup used during the partial transfiguration experiment) as opposed to incendio. It’s pretty hard to move your wand in some pattern when it’s stuck through a troll’s eye socket.
It’s not a fire vulnerability. It’s just that chemical change stops the regen.
Just because burning cut troll flesh makes it not regen doesn’t mean that it will penetrate. They’re not highly flammable like Twilight/Luminosity vampires. If I was designing Muggle anti-troll weaponry, I’d be going for something to penetrate into the body and then spread incendiary material. Not a flamethrower. (Although first physically injuring trolls and then dousing them with napalm might work, sort of.
Incendio in the troll’s eye would just burn out the eye.
Mana cost in HPMOR seems to affect cooldown more than castability of spells, and transfiguration seems to have no cooldown but (for Harry, Q and other powerful wizards are much faster) is time-consuming.
Harry should be able to near-instantaneously slice-and-dice any transfigurable object by using very thin cutting boundaries, and even cause explosive separation by using compressed inert gas, or even a friction-sensitive explosive (most explosives form fairly nonhazardous materials) Even if the acid failed to prevent the regen, he could have dismembered the troll temporarily and bought time to try something else or to burn it.
ETA: Also, Harry is now able to predict what forms of transfiguration are dangerous, and mild transfiguration sickness is not
The mana cost for incendio is probably much higher than a thin sheet of transfig.
I think that incendio simply forms a blowtorch or igntes the outside of objects. Weaponized partial transfig will ALWAYS be more powerful than first-year spells at a first-year mana supply. Partial transfig can slice things up, which is what Harry needed to do.
I was thinking it would work as effectively because of the fire weakness thing and Harry shouldn’t be magically depleted yet. Also it would be a lot safer than transfiguring sulfuric acid. Although it’s possible the troll was enchanted to make it fire resistant and that Harry frankly didn’t care whether he was violating the rules of transfiguration, and merely was worried about speed, but I’m inclined to think incendio would be faster.
Or maybe it’s not a good idea to cast incendio while the tip of your wand is in a very enclosed location (for instance due to gases that you expect to be released).
Or it’s maybe that that the transfiguration requires no wand movements (reference: look at the setup used during the partial transfiguration experiment) as opposed to incendio. It’s pretty hard to move your wand in some pattern when it’s stuck through a troll’s eye socket.
It’s not a fire vulnerability. It’s just that chemical change stops the regen.
Just because burning cut troll flesh makes it not regen doesn’t mean that it will penetrate. They’re not highly flammable like Twilight/Luminosity vampires. If I was designing Muggle anti-troll weaponry, I’d be going for something to penetrate into the body and then spread incendiary material. Not a flamethrower. (Although first physically injuring trolls and then dousing them with napalm might work, sort of.
Incendio in the troll’s eye would just burn out the eye.
Mana cost in HPMOR seems to affect cooldown more than castability of spells, and transfiguration seems to have no cooldown but (for Harry, Q and other powerful wizards are much faster) is time-consuming.
Harry should be able to near-instantaneously slice-and-dice any transfigurable object by using very thin cutting boundaries, and even cause explosive separation by using compressed inert gas, or even a friction-sensitive explosive (most explosives form fairly nonhazardous materials) Even if the acid failed to prevent the regen, he could have dismembered the troll temporarily and bought time to try something else or to burn it.
ETA: Also, Harry is now able to predict what forms of transfiguration are dangerous, and mild transfiguration sickness is not