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5th Level Force Power

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 an Intelligence saving throw. A creature with an Intelligence score of 2 or lower can’t be affected by this power. A target takes 8d6 psychic damage on a failed save, or half as much damage on a successful one.   After a failed save, a target has muddled thoughts for 1 minute. During that time, it rolls a 1d6 and subtracts the number rolled from all its attack rolls and ability checks, as well as its Constitution saving throws to maintain concentration. The target can make a Wisdom saving throw at the end of each of its turns, ending the effect on itself on a success.