You learn maneuvers that are fueled by special dice called Battle Dice.
Battle Dice
You have two Battle Dice, which are d6s. A Battle Die is expended when you use it. You regain all expended Battle Dice when you roll Initiative or finish a Short or Long Rest. Your Battle Die changes and more Battle Dice become available as shown on the Battle Dice column of the Vagabond Features table.
Maneuvers
You can expend Battle Dice to perform maneuvers. You learn three maneuvers of your choice for which you meet the prerequisites. Battle Edge, Dig Deep, and Rampage are recommended. Maneuvers are described in the "Maneuver Options" section later on in the class's description. You gain additional maneuvers as you gain levels in this class, as shown in the Maneuvers column of the Vagabond Features table. If another Vagabond feature gives you a maneuver, that maneuver doesn't count against your number of maneuvers known. Whenever you gain a Vagabond level, you can choose one of the maneuvers you know and replace it with another maneuver that you could learn at that level.
Saving Throws
If a maneuver requires a saving throw, the DC equals 8 plus your Strength or Dexterity modifier and Proficiency Bonus.