Eldritch Fissure

You shoot a pulsing beam of heightened eldritch energy toward a creature you can see within range.

Make a ranged spell attack - on a hit, the target takes 5d10 thunder damage and 5d10 lightning damage, as it's mind and body are ripped apart and melded back together in grotesque ways.

As well, the target's body is mutilated beyond repair - the target gains one level of exhaustion, which lasts until the Regenerate spell or similar magic affects it. While affected with this exhaustion, the target's speed is reduced to 5 ft., and whenever the target attempts to use an action, bonus action, or reaction, it must first succeed on a Constitution saving throw against your spell save DC, or the action is wasted.