Demonic Illusion: Paralyzing Echo

Myuuki creates four crystal flowers in order to make a crystal cube around the target in by using natural energy. Once trapped, Myuuki creates a large crystal above the cube using natural energy, then lets it drop on the cube. This creates a a large screeching echo inside the cube. The sound is extremely loud and can cut through ear plugs easily. Because the sound is enhanced with natural energy, this genjutsu is almost impossible to escape regularly, and because they're trapped inside a crystal cube their allies cannot get them out - with a few exceptions.

Usage
It is said to be the most powerful genjutsu Myuuki contains in her arsenal. It is immensely powerful and only has to reach the target's sense of hearing to be a success. In the genjutsu world, the target or targets are surrounded by four huge crystal golems keeping them confined with chains that keep them from moving inside a series of crystal cubes. Inside the inner most cube - with the chains still holding the enemy - is completely filed with water. This makes the opponent unable to escape since they cannot move, breathe, or destroy the crystals since the lightning release attack would be channeled into the water and shocking them. The golems won't ever release them unless Myuuki gives them the order.