What is the most dangerous martial arts in the world?

What is the most dangerous martial arts in the world?
In my opinion, "Shastar Vidiya" which literally means "knowledge of arms." This unique martial art concentrates on deadly weapons training.
The art itself dates back to the 1600's when it was started by the Khalsa Panth (The Sikh Nation), who were being terrorised by Mughal (Mongol) forces. Like most martial arts, it is used for defense. Practioners of Shastar Vidiya in battle have never lost a battle. During the British Raj (British Rule) it was banned for being so dangerous. It is difficult to find training as there are few masters outside of India. This martial art is practiced by Nihang Warriors. A master of Shastar Vidiya specializes in weapons but must also master hand-to-hand. Students train with the numbers stacked against them because the Khalsa always fought in battle outnumbered, but won.
The closely-related "Gatka" (Punjabi language) plays a large role in Shastar Vidiya.
Part of the training is to block out fear, realize that pain is nothing, and fight to the end. A warrior meditates to keep his mind focused in battle.

This is a famous line describing the Khalsa (the army who used shastar vidiya)
"even if he is cut piece by piece he never leaves the battlefield"