At the climax of the battle, both Itachi and Sasuke run out of chakra. However, Sasuke reveals that his actions up until now were only a preparation for his final jutsu.
The blade itself is imbued with
a Sealing Jutsu
النّصل بحدّ ذاته مُشبع بتقنيّة ختم
Für alle Ewigkeit. Das Schwert selbst
ist mit einem Versiegelungsjutsu …
La espada está impregnada 
con una técnica de sellado
La lama stessa è impregnata
da una tecnica confinante
A espada em si tem um Jutsu de Selamento
В самом клинке сокрыта
 запечатывающая техника.