Impossible

"Spells can only travel in a single plane. We all live on earth. But Lord Lucifer and the Demons live under the ground near the core of the earth. The dark creatures live between the sky and the land. So, the spells cannot move past the planes easily. That is why they were unaffected" the Witch lord explained the logic behind the spells not attacking the Demons like they attacked the others.

"So that implies, even the dark creatures cannot go into the underworld?" Lucian asked curiously.

"No Master Lucian, they can. The underworld opened its gates many years ago for all of us to enter and exit at will. Their gateway leads to another plane on earth, where the elements act differently than they act on the ground. The spells were guided by the elements on the ground. Even if they could reach the gates, they won't be able to cross them. The air in the underworld is hotter than the air on the ground. Usually, it expands and pushes itself out, when the gates were opened. So it