Kaio-Ken

As an action Spend 2 ki points to begin glowing with energy, doubling your movement speed and adding 1 monk die to your unarmed strike, and +2 to your AC

In addition you can spend additional ki point(s) to add a monk die(s) to your unarmed attack. (Kaioken x2, x3, etc)

Duration 1min

At the end of the duration, user must make a ki point CON saving throw, if failed, the user takes 1 point of exhaustion for every ki point used. At higher levels, the amount of exhaustion gained per ki point used is lessened.