Allowed? Yes, technically. Most would be afraid to "practice" it. It can do really whatever you want, anything deemed "op" needs to be discussed (thus the pming of cs).
Mind control is a hard sell. Summoning not so much. I mean really, that's going to be a hell of a challenge for a character, yet it is one of the most powerful magic if they use self-manipulation, rather than creation. Creation makes it akin to elementalism.

This however, does not include the control of other people's blood.