Kurohitsugi

Description
Envelops the target with a powerful torrent of gravity that takes the form of a box of black energy, covered in several spear-like protrusions. The spears then pierce the box, lacerating the one inside from head to toe. The spell is very difficult to use, as even Aizen could only unleash a third of its power without stating the particular incantation, when he used it on Sajin Komamura.

However, when Aizen later used it on Ichigo Kurosaki with the incantation, he stated that it possessed enough power to distort space and time. It is also noticeably-different in appearance. The sky appears to darken as multiple boxes of black energy appear, each of them topped off with cross-shaped spears, before they appear to enclose themselves on their victim.

Incantation
"The crest of turbidity, seeping out. An insolent vessel of madness. Boiling up, denying, numbness, blinking, obstructing slumber. The steel princess who creeps. The mud doll, ever disintegrating. Unite! Oppose! Filling the earth, know your own impotence!"

Known Practitioners

 * Sōsuke Aizen