Invisible Hand Spell

This might be my mind playing tricks on me, but I am very sure I have somewhere read about a spell which would conjure up an invisible hand that could do the wizard’s bidding. Not strangle people, but lift stuff, toss it around, that kind of thing. The thing is, I cannot find it. Is there such a spell, in BWG, MaBu or otherwise, or am I imagining things?

Spirit Servant maybe?