User blog comment:B214/Question and Answers/@comment-24248485-20140103094808/@comment-24248485-20140103200356

If I'm not mistaken wasn't it said that that form was only brought on by the fact that the POD had a mind or will of it's own so sirzechs level of power or boosted magic ability should have nothing to do with it. Also I don't think it was ever said that venelana can't do something similar (maybe not full body), besides isn't rias 17 to sirzechs several hundred or so? So maybe the POD needs more time to mature. I'm just saying it shouldn't be ruled out because sirzechs and rias are brother and sister so it wouldn't be shocking if it happened. I don't know I was just rereading last night and that thought crossed my mind....