Touch of Idiocy

With a touch, you reduce the target’s mental faculties. Make a melee spell attack against the target. On a hit, the target's Intelligence, Wisdom, and Charisma scores are reduced by 1d6 for the duration.

A remove curse cast on the target ends this spell early.

At Higher Levels. When you cast this spell using a spell slot of 4th or 5th level, you can maintain your concentration on the spell for up to 8 hours. When you use a spell slot of 6th level or higher, you can maintain your concentration on the spell for up to 24 hours.