Vestige of Queen Namhar

You summon the withering presence of Queen Namhar and the desert in which she died. Make a ranged attack.  The target takes 6d10 psychic damage and suffers one point of exhaustion. The target must also make on a Wisdom saving throw. The target takes 1d10 psychic damage at the start of its next turn on a failed save, or no damage on a successful save.