Fighter

Fighter: Fighting Styles

You can adopt a particular style of fighting through rigorous training with weapons. You cannot select a fighting style option you already have, even if you later get to choose again. Each time you select a fighting style, you must select a fighting style you do not currently know.

Fighting styles

Opportunist

If you can see one of your allies make an opportunity attack against another creature, you can use your reaction to also make an opportunity attack against that creature with a weapon you are wielding (including a ranged weapon) if the target creature is within your weapon’s reach or normal range (if you are wielding a ranged or thrown weapon).