Vengeful Bond

You risked your life to avenge a fallen friend by bringing justice to his killer. You gain the following benefits:

• Increase your Charisma score by 1, to a maximum of 20.
• You gain advantage on saving throws against being charmed, frightened, or stunned by creatures known to you that have threatened or harmed an ally.
• Once per long rest, when you trigger your sneak attack feature against a creature known to you that has harmed an ally, you can re-roll any sneak attack dice that are 1s when you roll for damage.