As an action, you blast the mind of a creature that you can touch or see within 35 meters, attempting to shatter its intellect and personality. The target takes 4d6 psychic damage and must make a Will saving throw.
On a failed save, the creature’s Intelligence and Charisma become −5. The creature can’t cast spells, activate magic items, understand language, or communicate in any intelligible way. The creature can, however, identify its friends, follow them, and even protect them.
At the end of every 30 days, the creature can repeat its saving throw against this spell. If it succeeds on its saving throw, the spell ends.
The spell can also be ended by a restoration spell cast with 4 mana or wish.