Just like what Shadowslash had said, the insects started evolving, they became more and more resistant to fire but the magma river is not just any ordinary fire element environment, it is a place that is filled with spiritual magma, capable of even harming dragons that are not fire types.
Shadowslash was not worried about the insects easily adapting to hot environments, he is much more worried about the fact that the Divine Beings on the enemy side would interfere in this war personally.
Boom! A loud explosion could be heard as a giant claw pierced through the sky and it starts descending towards the magma river.
The expression of everyone changes, fortunately, the consciousness of this plane stops it from advancing and even injures it heavily, the blood of the hand scattered everywhere, the insects saw it and they swarmed towards the drop of blood.