Bow Expert Feat

Your relentless practice with a bow grants you the following benefits while using one:

Prerequisite: Proficiency with bows

• Ranging Shots. When you miss a ranged weapon attack with a bow, your next ranged weapon attack roll with a bow has advantage.
• Overwatch. As a bonus action, you can ready a shot until the start of your next turn. If a creature moves 5 feet or more while within 30 feet of you while you have a shot readied, you can use your reaction to make a ranged weapon attack against that creature with a -5 to the attack roll.

Source: KCLL, page 186