puts out 3k degree flames

However, he did not need to check. That strike had created hellish flames of 3000
degrees Celsius. At temperatures higher than 2000 degrees Celsius, the human body
would melt before it burned, so the boy likely looked something like the metal railing
that had melted like a sugar sculpture. He was likely splattered across the dorm wall like
a used piece of gum.
Stiyl gave a sigh as he reflected on how right he had been to get the boy away from Index.
Things would have been a bit more difficult if the boy had used Index’s injured form as a
shield.
But he could not retrieve Index as things were.
Stiyl sighed again. The wall of flames blocked him from heading to the other end of the
passageway where Index was. If there was another emergency staircase on the other side
of the passageway, he could manage, but it would hardly be funny if Index got caught up
in the flames while he took that detour.
Stiyl shook his head in annoyance and spoke as he peered into the smoke one last time
as if he could see through it.
“Thank you, excellent work, and too bad. Well, at that level, you couldn’t win even if you
had 1000 tries.”
“Are you really so sure I can’t win no matter how many times I try?”
For an instant, the magician froze in place at that voice coming from those hellish
flames.
With a roar, the wall of flames and smoke swirled and was blown away.

It was as if a tornado had appeared in the center of the flames and smoke and blew
them all away.
Kamijou Touma stood there.
The metal railing had been melted like a sugar sculpture, the paint on the floor and walls
had peeled, and the fluorescent lights had melted and dripped down in the intense heat,
but that boy had remained unharmed in the middle of those hellish flames and
scorching heat.
“Honestly, what was I so afraid of?” said Kamijou with the sides of his mouth twisted in
disinterest. “This is the same right hand that destroyed Index’s Walking Church.”
Kamijou truly did not understand anything about what was known as magic.
He did not know how it worked or what was going on where he could not see. Most
likely, he would only understand half of it if it was explained to him from start to finish.
But there was one thing even an idiot like him knew.
In the end, it was just a supernatural power.
The crimson flames he had blown away had not been completely extinguished.
In a perfect circle around Kamijou, the scorching flames continued to burn. But…
“Out of the way.”
With that one statement, Kamijou touched the 3000 degree magical flames with his
right hand and the rest of the flames vanished.

- Toaru Majutsu no Index Volume 1, Chapter 1 Part 6