Graveyard of Gods and Devils

There was a large Ancient Magical Formation Spell in the middle of the plaza, and there were layers upon layers of firewalls with flames that soared into the sky. There was an intense heatwave, and the air was scalding. This was why one would feel a stab of pain from his throat upon breathing!

The ground was like an iron plane heated until it turned red, and everyone felt like they were being roasted atop a fire. Their whole bodies sweated profusely just by standing there!

There were giants with a height that surpassed a dozen meters in the Magical Formation Spell and they were walking around in it without stopping. They were holding a large Wolf Tooth Club, and their bodies emitted purple flames. Although, it would be better to say that they were giants formed by flames rather than saying that their bodies were enveloped by flames.

Fire Element Guardians?