Synaptic Sphere

You choose a point within range and cause psychic energy to explode there. Each creature in a 20-foot-radius sphere centered on that point must make a Intelligence saving throw. A creature with an Intelligence score of 2 or lower can’t be affected by this spell. A target takes 6d6 psychic damage on a failed save, or half as much damage on a successful one.

After a failed save, a target has muddled thoughts until the end of its next turn. During that time, it rolls a d4 and subtracts the number rolled from all its attack rolls and ability checks, as well as its Constitution saving throws to maintain concentration.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.