You create a sound like a cracking whip next to one friendly creature and one hostile creature you can see within range. Spurred by the sudden snap of sound, the friendly target has advantage on the next attack roll or saving throw it makes before the start of your next turn.    Startled by the sound, the hostile target must make a Dexterity saving throw. On a failed save, the target takes 2d10 thunder damage and can’t take reactions until the start of its next turn. On a successful save, the target takes half the damage and can still take reactions.