Darkness Cage

Darkness Cage is an unnamed Darkness Magic Spell.

Description
The user creates a sphere darkness Magic in their hand in the form of ghosts that revolves around the center. The user then shoots it at the target, releasing several ghosts that wrap around the target, restraining its movement.

In the anime, the user crushes a different-looking sphere in their hand, summoning several small masses of darkness Magic which then grow and come together to create a sphere around the target, restraining its movement and dealing pain.