Brenna can use a bonus action to regain hit points equal to 1d10 plus her fighter level. Once she uses this feature, she must finish a short or long rest before using it again.

Brenna can use a bonus action to choose to gain advantage on the next Strength check, Constitution check, or Strength saving throw she makes before the end of the turn, but if she does so, attacks against her gain advantage until the start of her next turn. She can use this feature once per short or long rest.

When Brenna hits with a weapon attack, she can expend one superiority die to add the die to the damage roll and potentially frighten the target if the maneuver calls for it.

When Brenna hits with a weapon attack, she can expend one superiority die to add the die to the attack's damage and push the target away from her.

When a creature misses Brenna with a melee attack, she can use her reaction and expend one superiority die to make a melee weapon attack against that creature.

When Brenna hits a creature with a weapon attack, she can expend one superiority die to add the die to the damage and her allies gain an opening against the target.

When Brenna makes an attack roll against a creature, she can expend one superiority die and add it to the roll, after seeing the roll but before knowing the outcome.

When Brenna hits with a weapon attack, she can expend one superiority die to add the die to the damage roll and knock the target prone if it is Large or smaller.

Brenna has a pool of d20s called superiority dice, which she can spend on Battle Master maneuvers. She knows three maneuvers at 3rd level, learns a fourth at 7th, a fifth at 10th, and a sixth at 15th. Her superiority dice are d8s, and she regains all expended dice when she finishes a short or long rest.

When Brenna hits with a weapon attack, she can expend one superiority die to fuel a maneuver. Her known maneuvers are Commander's Strike, Disarming Attack, Distracting Strike, Parry, Precision Attack, Trip Attack, Goading Attack, Menacing Attack, Pushing Attack, Riposte, Sweeping Attack, and Rally.

Brenna gains proficiency with one type of artisan's tools or gaming set of her choice. She is proficient with dice and tactical training sets from her noble education and combat studies.

On her turn, Brenna can take one additional action on top of her regular action. Once she uses this feature, she must finish a short or long rest before using it again. At 17th level, she can use it twice before resting.

Brenna chooses a fighting style that reflects her training. She uses Great Weapon Fighting in her practice, though she can also adapt to Archery, Defense, Dueling, or other styles if circumstances demand it.

Brenna can add a d4 to one Strength, Dexterity, or Constitution check she makes, provided she does not already add a d20 roll with proficiency bonus to the check. She also adds a d4 to initiative rolls if she is not wearing heavy armor, and she can make a 10-foot running long jump after moving 5 feet on foot.

Brenna can make one additional weapon attack whenever she takes the Attack action on her turn. This increases to two additional attacks at 11th level and three additional attacks at 20th level.

Brenna can choose one additional maneuver and one additional superiority die. Her superiority die also become d10s at 10th level and d12s at 18th level. Her maneuver save DC is 8 + proficiency bonus + Strength or Dexterity modifier, depending on the weapon used.

After observing or interacting with another creature for at least 1 minute, Brenna can learn whether it is her equal, superior, or inferior in regard to two characteristics chosen from its Strength score, Dexterity score, Constitution score, Armor Class, current hit points, total class levels, fighter class levels, or fighter levels if it has no class levels.

Brenna can add half her proficiency bonus to any Strength, Dexterity, or Constitution check that does not already use it.

Brenna gains an additional Ability Score Improvement or feat at 4th, 6th, 8th, 12th, 14th, 16th, and 19th level.

If Brenna fails a saving throw, she can reroll it. She can use this feature once per long rest at 9th level, twice per long rest at 13th level, and three times per long rest at 17th level.

Brenna's extra attack improves again at 11th level, allowing her to make three attacks when she takes the Attack action.

Brenna's combat superiority die increases to d10s, making her maneuvers harder to ignore.

Brenna's combat superiority die increases to d12s, turning her maneuvers into devastating displays of control and force.

Brenna's attacks with weapon strikes are extraordinarily precise and punishing. She may apply her maneuvers with veteran timing, and her superiority dice refresh on a short or long rest.

Brenna can use Indomitable three times between long rests.

Brenna can make four attacks when she takes the Attack action.

Because of her noble status, Brenna can secure an audience with local officials, instructors, security chiefs, and other people of influence. She is also recognized within elite circles as a woman of standing, which can open doors that would otherwise stay locked.