User blog comment:Njalm2/Nanja's Grimoire: Evocation/@comment-18812574-20151231164504/@comment-3403804-20151231232312

It's a rather unusual ability, and usually reserved for very powerful Kido Masters. It's rarely relevant however, it's far more common for masters of Kidou to turn the elemental attacks of their enemies against them, which is done by seizing control of the spiritual energy that comprises such attacks.