Mind Shards

With a swing and a thought, you detonate your mind weapon into a burst of psychic shards that shred the mind. You concentrate and unleash a 15-foot cone that deals 1d6 per 2 levels (rounded up) mental damage to all creatures in the area, with a basic Will save against the higher of your class DC or spell DC. After the attack, your mind weapon automatically re-forms, and you can't use this ability again for 1 minute. Mind Shards' damage increases by 1d6 at level 7 and every two levels thereafter.