Focused Strike

Before you make a weapon attack with a weapon you are proficient with, you can choose to take a penalty to the attack roll up to a maximum of your proficiency bonus. If the attack hits, you add twice the penalty to the attack’s damage roll.

If a Focused Strike reduces a creature to 0 hit points, any excess damage from that attack can carry over to another creature of your choice within 5 feet of the original target. This overflow damage deals an additional amount equal to your proficiency bonus.

When you use Focused Strike, your attack’s critical hit range increases to 19-20.