Iaijatsu Style

You have trained in the traditional Iaijatsu style of swordplay. You are trained in delivering deadly blows with great power and precision.

Enpi

Beginning at 3rd level, as an action you may spend one Zen charge to make a ranged weapon attack with a range of 30ft. using blades of wind. Make this attack and damage roll as though you are making a melee weapon attack. Attacks made in this way deal thunder damage.
Beginning at 5th level, you may make two ranged melee weapon attacks when you use Enpi.

Body of Steel

Starting at 6th level, you can add half your proficiency bonus (round up) to any Strength, Dexterity, or Constitution check you make that doesn't already use your proficiency bonus.
In addition, when you make a running long jump, the distance you can cover increases by a number of feet equal to your Strength modifier.

Tenka Goken

At 10th level, as an action you may spend 2 zen to deliver a series of attacks with incredible speed and focus. You take melee weapon attack against all creatures in a 15ft. cone in front of you.

Hissatsu: Kaiten

At the 14th level, as a bonus action you may spend one Zen charge. Until the start of your next turn you add your Wisdom modifier to all weapon damage rolls you make.