As soon as Lucifer's fist landed on the ground, something happened which had never happened before. Instead of the lighting coming from the sky, the black lightning came from the ground through the cracks that were developed because of the punch.
All the powerful lightning formed a lightning wall before Lucifer, which blocked all the flames, not letting even a tiny bit reach him.
The fierce flames of a High Beast faced the mighty thunder of a Warlock which had evolved from S Grade. It was something that could even defend him against such attacks.
Lightning was not only more powerful now after the evolution, but it was also more flexible. It wasn't only something that could be used to attack blindly. It could also provide a defense to him.