Cthulhu's Vision of Madness

One creature of your choice that you can see must succeed on a Wisdom saving throw or become charmed by you for the duration.

Upon being charmed, the target's eyes are covered by an inky black film, and it is subjected to visions of Cthulhu's true form.

The charmed target must use its action before moving on each of its turns to make a random attack against a creature other than you or your allies. If there are no creatures within its reach, then the target must attack itself on its turn.

The target can make a Wisdom saving throw at the end of each of its turns. On a success, the spell ends.