Channeling Blade
Whenever you use a standard action to activate any magic sphere ability that requires a touch attack, you can deliver the spell through your mind blade. Instead of making a touch attack to deliver the effect, you can make one free attack with your mind blade (at your highest base attack bonus) as part of activating this ability; this attack is treated as an attack action. If successful, this attack deals its normal damage as well as the effects of the magic sphere ability. This attack uses the mind blade’s critical range (20, 19–20, or 18–20 and modified by the keen weapon special ability or similar effects), but the sphere effect only deals ×2 damage on a successful critical hit, while the mind blade damage uses its own critical modifier.
U: Part of Ultimate Spheres of Power and does not need to be bought separately from that book