One month worth of energy

 Femradiel tried to attack the sphere of mana to make Belphegor lose control over it, but in the end, it ate all the projectiles she fired at the sphere. Femradiel began to sweat cold because not even all the potions that she can use will save her from that situation.

"All of the mana… huh," Femradiel said, and then it smirked.

 She still was an option, it was kind of risky, but it was better than nothing. Before Belphegor could fire the massive sphere of mana, she Teleported to behind. He imagined that she could try a suicide attack, but in the end, the demon assumed that she would try to do something clever… it was a pity that hadn't been the case.