Battle Master Archetype
3rd Level: Advanced Combat Superiority
Your ability to learn and utilize martial maneuvers exceeds most other warriors. Your total number of maneuver dice increases by 2.
Additionally, your training has made your maneuvers more powerful than the average fighter. Your maneuver dice turn into d8s. At 10th level, they turn into d10s. At 14th level, they turn into d12s.
3rd Level: Student of War
You gain proficiency with one type of artisan's tools of your choice,and you gain proficiency in one skill of your choice from the skills available to Fighters at level 1.
6th Level: Heroic Rejuvenation
When you use your Second Wind feature, you regain one of your expended maneuver dice.
10th Level: Master at Arms
Your understanding of technique has grown, allowing you to learn techniques from a wide spectrum of disciplines. Choose two maneuvers from any class, including this one. If the maneuver has a prerequisite level, you can learn it as long as your fighter level meets that prerequisite.
These maneuvers count as fighter maneuvers for you, but they don't count against your total number of maneuvers known.
You learn one additional maneuver from any class at 14th level and again at 18th level.
14th Level: Legendary Warrior
Your combat prowess is nigh-unparalleled. Once per turn, when you use a maneuver, you can roll a d8 and use the number rolled instead of expending a maneuver die. Additionally, you regain 1 maneuver die when you roll Initiative.