Fighting Initiate

Prerequisite Proficiency with a martial weapon

Your martial Training has helped you develop a particular style of Fighting. As a result, you learn one Fighting Style option of your choice from the Fighter class. If you already have a style, the one you choose must be different.
Whenever you reach a level that grants the Ability Score Improvement feature, you can replace this feat's Fighting style with another one from the Fighter class that you don't have.