You gain proficiency in one of the following skills of your choice: Acrobatics, Athletics, Endurance, Intimidation, or Survival. Moreover, your jump distance is doubled.
When you take the Attack action, your critical hit threshold for the attack roll decreases by 1, by 2 as a level 10 fighter, or by 3 as a level 14 fighter.
When you take the Attack action and you have advantage on the attack roll, you critically hit if the lower of the two d20s would also hit the target.
You regain a number of hit points equal to your Constitution modifier at the start of your turn, provided you are wounded.