The achieved effect was also an enormous wall of fire, bigger than Erik ever made. It wasn't as powerful, but that didn't mean it wasn't at all.
The fire spread, surrounding everything nearby. The mechs, already damaged by the corrosive gas, were now trapped in an intense fire.
The heat increased to unbearable levels; it was so strong the metal the mechas were made from started bending under the machine's weight, and the electrical parts, not already destroyed, started malfunctioning until they broke.
The blackguards around, caught in this fire, had no way to escape. Their screams started strong until they stopped having the strength even to do that.