Curse Technique: Plague of Old Age

is a Jujutsu first invented by Natsubi. As with other Jashin techniques, this requires the blood of the opponent(s) to be effective. Once this blood has been attained however, she can utilize it in two ways; by ingesting it, she generates a durable, spiritual link to the individuals. From that course of action, she can reduce the adversary to a decrepit hag, symbols covering their body before aging them to a slobbering, stuttering mess. In such a state, all aspects (including chakra, memory, and intelligence) are brought to this level, making them highly vulnerable targets for successive attacks.

The other option is to simply contain the blood on her person. While this does not allow her to effect the person directly, it does allow her to age up and destroy entities "originating" from them. For example, a kunai or weapon that is thrown at her will be destroyed upon touching her, because the weapon's point of origin (i.e. the one responsible for the action) is the victim. Similar effects are applied to various forms of elemental ninjutsu, with fires fizzling out, winds disappearing, or water vaporizing. Clones and other ninjutsu are subject to the same effect as their elemental counterparts, with them and potential side-effects related to their destruction being negated.