Ronin

A Ronin is a wandering swordsman looking to live a simple life and improve their skill with the blade. Ronin are incredibly skilled swordsman combing both speed and power. They look to end fights in just one swing and excel in single combat. They also are masters of more than just swordplay, being masters of the arts as well such as calligraphy and painting. A ronin usually comes from a dojo and is taught by a master but this is not always the case. Some are outsiders who were taught no actual techniques but learn through survival while others are simply self taught.

Trained in Body and Mind

When you take this subclass at level 3 you gain proficiencies in insight and perception as well as either calligrapher’s tools or painter’s tools. If you are already proficient in these skills you can choose to have expertise or choose another skill.

A Single Strike

You take your time in a fight, looking for an opening in your opponents defense. Starting at third level you may spend your action to study one enemy’s movements and attack patterns to find an opening. This enemy gets disadvantage while attacking you this turn but all other enemies gain advantage against you for this turn. Next turn if you attack the same enemy your attack has advantage as well as an expanded crit range of 19-20. You lose this bonus if you don’t attack the next turn. This crit bonus also increases as you level: 10th 18-20, 15th 17-20, and 20th 16-20.

Unwavering Focus

At level 9 you cannot be put at disadvantage for any attack made with A Single Strike and that attack is made with double your proficiency bonus.

Ichimonji

At level 13 you can choose to perform a much more powerful strike than normal when you attack with A Single Strike. All damage dice for that attack is doubled. If you crit on this attack double the dice again. You can only perform Ichimonji while using a katana or similar weapon and not using a shield. This attack can be performed a number of times equal to your wisdom modifier and is reset on a long rest.

True Strike

Starting at level 17 when you attack with A Single Strike all your damage dice is maximized on a natural 20.