Empower

As you cast this spell, your eyes start glowing a color of your choice and your skin emits light of the same color. You can amplify your voice to make it sound louder, but not loud enough to deafen or cause damage. For the duration, on any attack that you make, a  natural 18 or higher on the roll counts as a critical hit. You can also use a bonus action on each of your turns before the spell ends to do 1d4 lightning damage to up to three targets within 30 ft.