Mesmerization was originally a 'hang in the air (at the target)' effect. I'm not sure what the maximum targets were, was it four?
Here are some threads with people talking about it.
http://web.archive.org/web/200105300...c&f=9&t=004411
http://web.archive.org/web/200105300...9&t=004473&p=3
Not seeing anything specific about grav flux after a quick search. I'll try again later.