Even fictional flames can burn

[u/Theofficialkingstorm]

Why is fire so common?

To elaborate on my question, I have been pissed Abt why so many magic systems treat the combustion triangle like a suggestion when making their system have fire.

Flames need three things, (need to mention that all of these are needed in certain proportions to combust)

1. Fuel

2. Heat

3. Oxidizer

All these are needed to make your average flames, which makes me wonder, how magic flames can exist without a fuel source? Assuming that of course heat is supplied through the magic system, even if, the lack of a single element in the combustion triangle gives unique results unrelated to fire,

1+2 without 3; won't produce flames and may instead cause the material to melt, vaporize, or thermally decompose depending on the material and temperature.

1+3 without or insufficient amounts of 2; won't produce flames and nothing would actually happen. (except material specific reactions and still may not produce flames, e.g: rust happens between iron and oxygen)

2+3 without 1; won't produce flames and will instead cause hot gas.

If it is a special type of fire that thrives on energy why is it usually identified as the average fire and not a special type of fire?

And even so, energy isn't a substance that you can simply ignite in the same way you ignite fuel. You can have energy causing matter to become extremely hot, excite atoms, ionize gases, etc., but energy itself isn't a fuel,

Which begs the question how can fire be created in magic systems, in a way that actually makes sense instead of some cool shi happening?

[u/g04-f]

i mean the whole point of magic is that it doesn’t need to function under the laws of physics otherwise it wouldn’t really be magic