Samurai (5A)

This is a Fighter subclass for 5A

The Samurai is a fighter who draws on an implacable fighting spirit to overcome enemies. A samurai’s resolve is nearly unbreakable, and the enemies in a samurai’s path have two choices: yield or die fighting.

Greyhawk: Conventional samurai exist in Nippon, but in the Flanaess the samurai subclass can be used for knightly orders that straddle the line between fighter and paladin, such as the Knight Protectors of the Great Kingdom.

Source: Xanathar's Guide to Everything

Subclass Features

Bonus Proficiency

When you choose this archetype at 3rd level, you gain proficiency in one of the following skills of your choice: History, Insight, Performance, or Persuasion. Alternatively, you learn one language of your choice.

Fighting Spirit

Starting at 3rd level, your intensity in battle can shield you and help you strike true. As a bonus action on your turn, you can give yourself advantage on all weapon attack rolls until the end of the current turn. When you do so, you also gain 5 temporary hit points. The number of hit points increases when you reach certain levels in this class, increasing to 10 at 10th level and 15 at 15th level.

You can use this feature a number of times equal to your proficiency bonus. You regain all expended uses of it when you finish a long rest.

Elegant Courtier

Starting at 7th level, your discipline and attention to detail allow you to excel in social situations. Whenever you make a Charisma (Persuasion) check, you gain a bonus to the check equal to your Wisdom modifier.

Your self-control also causes you to gain proficiency in Wisdom saving throws. If you already have this proficiency, you instead gain proficiency in Intelligence or Charisma saving throws (your choice).

Tireless Spirit

Starting at 10th level, you gain advantage on Dexterity checks for initiative. If you attack an opponent that has not yet had a turn in this combat, you gain advantage on the attack.

When you roll initiative and have no uses of Fighting Spirit remaining, you regain one use of Fighting Spirit, up to your maximum.

Rapid Strike

Starting at 15th level, you learn to trade accuracy for swift strikes. If you take the Attack action on your turn and have advantage on an attack roll against against one of the targets, you can forgo the advantage for that roll to make an additional weapon attack against that target as part of the same action. You can do so no more than once per turn.

Strength Before Death

Starting at 18th level, your fighting spirit can delay the grasp of death. If you take damage that reduces you to 0 hit points, you can use your reaction to delay falling unconscious, and you can immediately take an extra turn. While you have 0 hit points during that extra turn, taking damage causes death saving throw failures as normal, and three death saving throw failures can still kill you. When the extra turn ends, you fall unconscious if you still have 0 hit points.

Once you use this feature, you can’t use it again until you finish a long rest.

Editor's Notes

The samurai was lackluster, abilities weak, too restricted, or not available enough.

Fighting spirit is the main feature of the subclass, and is now available much more often.
Tireless Spirit no longer encourages you to use up all your fighting spirit. It also has an entirely new feature reminiscent of Iaijutsu - better initiative, and advantage if you win initiative.
Rapid Strike can now generate up to double the normal number of attacks. I had to make the language such that it cannot give an infinite number of attacks.
Strength Before Death no longer takes a reaction - by this point you are likely to have used up your reactions.