Black Flash

You perfectly synchronize your cursed energy with a physical strike of 5d10 force damage, creating a spatial distortion that multiplies your impact while ignoring resistance to bludgeoning, slashing, or piercing damage. If stunned, the target takes an additional 4d8 of thunder damage.

If you roll a natural 20 on the attack roll, the bonus damage becomes 10d10, and the target must make a Constitution saving throw or be stunned until the end of your next turn.

After successfully triggering Black Flash, the spell ends.