You have learned how to effectively pin your enemies down. You gain the following benefits:
• Increase your Dexterity score by 1, to a maximum of 20.
• When you miss with a ranged weapon attack against a hostile creature that is behind half or three-quarters cover, you can force your target to make a Wisdom saving throw (DC = 10 + your Dexterity modifier) immediately after the attack. If the saving throw fails, the target is frightened of you until the end of your next turn. While frightened in this way, a creature's movement speed becomes 0 and it can only make one attack per turn, regardless of the number of attacks it can normally make. You can use this ability a number of times equal to half your proficiency bonus (rounded down) per long rest.