Base Class: Fighter
Regal and mighty, the King is a crowned warrior who has taken to the battlefield themselves, instructing those they rule through the carnage of strife. Even if they have no throne to their name, they view the world as their kingdom and the people at their disposal, marching on with a monarch’s wisdom.
Rally the Masses!
When you choose this archetype at 3rd level, you learn to rally those around you to with your innate claim to rule. On your turn, as a bonus action, you call out to a creature within 30 feet of you to remind them of your greatness. So long as they can hear you, they regain hit points equal to your Wisdom modifier + half your Fighter level (minimum of 5). Creatures benefiting from this effect also gain advantage against being charmed or frightened until the end of their next turn. You can use this feature a number of times equal to your proficiency modifier. You regain all expended uses of it when you finish a short or long rest.
Crown's Intuition
Starting at 7th level, though you are a king, the crown is not the only hat you wear. You can add half your proficiency bonus (rounded up) to any Wisdom check you make that doesn't already use your proficiency bonus.
Royal Court Training
At 7th level you also gain proficiency in Persuasion and Intimidation skills. If you are already proficient then you gain Expertise instead.
Royal Reinforcements
You claim to the throne knows no bounds, and is recognized by the weave itself, allowing you to summon aid to fight by your side. You can cast either Summon Fey or Summon Shadowspawn without using a spell slot. When you do the spell duration is one minute but does not require concentration.
Once you do, you cannot do so again until you finish a short or long rest.
At 15th Level you may also cast either Summon Elemental or Summon Construct once per short or long rest.
At 20th Level you may also cast Summon Celestial or Summon Draconic Spirit once per short or long rest.
Benevolent Leader
Starting at 15th level, your Rally the Masses ability is improved by your experience on the Throne, and you grace those who follow you with this knowledge. You can now call out to creatures within 60 feet of you and the hit points they regain now equals your Proficiency modifier + your Wisdom modifier + half your Fighter Level (Minimum 15). In addition, you can choose to end one effect afflicting the creature that is causing them to be Charmed, Frightened, or Incapacitated.
Royal Senses
Starting at 18th level, the wisdom you’ve gained from your rule has surged and has spread to your physical readiness, and you can add your Wisdom modifier to any Constitution, Strength or Dexterity Save.
In addition, you gain Advantage on Wisdom Saves