Starting at 3rd level, when you use your Second Wind feature, you can choose a number of non-hostile creatures up to your Charisma modifier (minimum of 1) within 60 feet of you that can see or hear you. Each one regains hit points equal to your fighter level. Any remaining hit points that would be regained are turned into temporary hit points that last for 1 minute.
Rallying Cry's Temp Hit Points
For example, you are a 3rd-level fighter, and your allied bard needs to regain 2 hit points to be at maximum hit points. Your Rallying Cry will cause the bard to regain the 2 hit points and to gain 1 temporary hit point.
Banner
At 3rd level, the next turn you take a long rest, you can craft a banner, or use an existing one, to represent your order. While you are displaying or holding your banner and you are not incapacitated, all allies within 10 feet have a +1 bonus to saving throws against being frightened or charmed, provided they can see your banner. At 7th and 15th level, the bonus increases by +1 and the range increases by 10 feet.
While you are holding the banner, you may make a special action to make a speech to inspire your allies and frightened hostile creatures. Each ally within the range of the banner’s aura add your Charisma modifier to Intelligence, Wisdom, and Charisma saving throws. Each hostile creature within the range of the banner’s aura must make a Wisdom saving throw, or be frightened of you. These effects last for 1 minute, you die, or until you are not holding your banner. Creatures who failed the save may attempt the saving throw at the end of each of their turns.
You must finish a long rest before using this special action again.
Banner Save DC = 8 + your proficiency bonus + your Charisma modifier
If your banner is lost or destroyed, you can make a new one using 50 gp in raw materials and a skill check using Weaver’s Tools over the course of an hour or a short rest.
Royal Envoy
At 7th level, you gain proficiency in the Persuasion skill and fluency in two languages of your choice. If you are already proficient in Persuasion, you gain proficiency one of the following skills of your choice: Animal Handling, Insight, Intimidation, or Performance.
Your proficiency bonus is doubled for any ability check you make that uses Persuasion. You gain this benefit regardless of the proficiency gained from this feature.
Inspiring Act
Starting at 10th level, whenever you use your Action Surge feature or whenever you score a critical hit on a creature with a weapon attack, you can immediately choose one allied creature within 30 feet of you that can see or hear you. That creature can make one weapon attack with its reaction.
Starting at 18th level, the range and number of allied creatures you can target are doubled.
Bulwark
Starting at 15th level, whenever you use your Indomitable feature to reroll a saving throw and you aren’t incapacitated, you can immediately choose one allied creature within your Banner’s range that can see or hear you that failed the same effect. Both you and that creature reroll the saving throw and must use the new rolls.