But... Orianna beats them all hands down.
What was also obvious was that she didn't want to hurt Touma (strangely enough, she was fine with putting Tsuchimikado in pain, and didn't seems phased about the girl who's in hospital right now). Tsuchimikado's pain shouldn't have happened though. It'd make sense if he was in the process of healing, or if it had painkilling properties, but he should have been fine at that time. That spell didn't sound like it was one that reverses magical healing.
Touma needs to learn something from his Dad, namely how to enjoy a harem.