The heroes did what they could to defend but the fire was not only able to burn their shield but it was also able to nullify any magic. The archangels came to their rescue but it was too late and it was of no use. The fire still damaged the archangels and the heat was enough to suffocate the heroes.
Ignius did not relent and poured out all of his all into that fire breath just to make sure that they would die. He did not care if he perished by exhausting all of his power as long as he could take them down. While he was giving it all, a large sword came from the sky and stabbed through his back.
The large sword penetrated his scales and went through his body. It successfully stabbed its heart. Ignius fell down from the sky with a loud 'thud' and it shook the entire structure where they were in. Despite the dragon's defeat, he was still glad that those damn heroes were finally dead and those archangels suffered damage.