Samurai Teaching: Soul of the Samurai

You are the embodiment of a samurai when in combat, as if your weapon and body are one in combat. You must be proficient with at least 1 versatile weapon to learn this feat.

Once per short rest, When you move, draw a versatile weapon, and attack with the same weapon in that order on your turn, you may make your attack as an Iaijutsu. Instead of rolling to hit, your opponent must make a dex save equal to 10+ your modifier to hit with your weapon, and on a fail, your attack hits and you move 5 ft through the opponent without provoking opportunity attacks.

The first time you land an attack each turn with a one handed versatile weapon, you may use the versatile weapons two handed attack die in place of it's one handed attack die.