The Fear

The Fear is a special concoction of T’challa Uchiha produced through his Dokuton hiden. When inhaled or absorbed into the skin the chemical causes the brain to experience fear unlike anything felt before. This reaction is so powerful that those with weaker willpower succumb to it’s influence causing her heart to fail from the immense shock. Of course one's experiences and willpower can indeed allow them to persevere and survive the chemical for a short time, but T’challa is confident that all will fall eventually.

Because the flight or fight response is activated so aggressively within the brain of the affected, it causes those who do not die immediately to lose most of their rational thinking skills and begin to doubt everything they once believed. Once Senjutsu is added to the mix the poison begins to mutate and cause horrifying hallucinations that only speed up the process of their hearts failing.

It should be noted the fear is not a genjutsu, instead causing the brain to produce the necessary chemicals to naturally cause this effect, making it a viable option for most opponents.