If ki is life Mantra is a combination of it with faith and has a different quality to it. It can be bestowed by the gods to a particularly gifted or devoted child, it can be found by a very lucky young monk during one of his intense meditation sessions, or by finding a mantra reactor left behind by a dead mantra warrior. Fact stands that it requires al ot of luck and that whoever finds it is on the path of greatness. Mantra can be harnessed only in the early years of life of a person, when their souls are still pure and untainted then the chances becomes null. After acquiring mantra it lays dormant and can be awakened only through hard work and meditation 

Flashing strikes Technique

ORA ORA ORA a neverending flurry of strikes. Starting when you choose this tradition at 3rd level, you are fast and precise: if you aren't holding any weapon nor wearing any armor you can use flurry of blows or step of the wind without using any ki.

Heavy blow

BOOM. Starting from your 3rd level your mantra empowered strike hits hard. Use 2 mantra to add your Wisdom modifier to tour next unarmed attack. Add 2 times your Wisdom modifier on level 7, 3 times on level 11, 4 times on level 17.

Limit Burst

Starting at 6th level, you push your body past its limit and become an unstoppable force of pure power. As an action, you can supercharge yourself with Mantra and become resistant to all damage. This lasts for 1 minute, but can end early if your are knocked unconscious or if you use a bonus action to do so. You can use this feature once per long rest.

Penetrating defense

Your mantra infused hits are even more precise and ignore part of the enemy defense. Startin from the 6th level every unarmed attack has +2 to the attack roll and you can spend 2 mantra to make an unarmed attack unavoidable ignoring the enemy AC.

Vajra Form

At 11th level, you get your first real taste of what the Asura are truly capable of. Your Limit Burst is upgraded to a form more befitting of your Mantra Affinity. When you activate your Limit Burst, you grow two additional sets of arms to use in combat. While you have them, you gain one additional use of your Extra Attack per turn.

Mantra Form

This is an Asura's true power. Not many have survived long enough to behold the majesty of this form for long. When you reach 17th level, your Limit Burst is upgraded once more. When you transform, hundreds of limbs burst out from your back, coalescing into two mighty arms that can devastate even the most powerful of opponents. In addition to all previous upgrades to your Limit Burst, you now have a flying speed equal to your walking speed. You can use Enlarge/Reduce on yourself without concentration, but the effects end when you exit this form. Your Strength Score becomes 30 as long as you are in this form.

Mantra reactor

Starting from your 17th level your body mantra forms a reactor capable of sustaining you indefinetebly in any enviroment. You don't age, can't be aged magically and you don't need to eat, drink, breath or sleep.