Way of the Wind

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Quick-Foot

Gain proficiency with acrobatics, if you already have proficiency, gain expertise instead.

Momentum

Starting when you pick this subclass at 3rd level, if you move at least 10 feet before attacking, add an extra 1d6 damage for every 10 feet you moved before the attack up to half your proficiency bonus, rounded. (minimum: 1)

Flowing Motion

After you hit a creature with an attack, the creature cannot take opportunity attacks.

Friction

Beginning at 11th level, you can move your hands fast enough to ignite from the wind. Whenever you attack, you may spend 1 ki to deal an extra 2d6 fire damage.

Discombobulating blow

At 17th level, you've mastered and understood the human body to the limit. Once per long rest, you may spend an action to give a hostile creature vulnerability to all of your attacks until the end of your next turn.