Shock

You send a crackling beam of energy into your opponent's head, leaving them psychologically vulnerable. A creature of your choice within range must make a Constitution saving throw.

On a failed save, the creature must roll 1d4. For the duration, they must subtract this number from any Wisdom, Intelligence or Charisma saving throw they make.

At Higher Levels. For each level above 2nd at which you cast the spell, the creature must add 1 to the number shown on the dice.