Cleaving Critical

Your prowess for fighting and slaughtering your enemies is unmatched. While you are raging, you gain the following benefits:

• You score a critical hit on a 19 or 20 on the d20.
• Whenever you score a critical hit, creatures within 10 feet of the hit creature (not including you or them) must succeed on a Wisdom saving throw (DC= 8 + your proficiency bonus + your Constitution modifier) or become frightened of you until the end of your next turn.
• Whenever you score a critical hit, the attack deals extra damage equal to your proficiency bonus.