Mind Control

[Twinblades]

Quote:

Mind Control's full duration is one minute, but there are several factors which can cause it to break early. A break is checked vs mob's level / distance from controlling priest / resistances of target, every x seconds, and the spell can break without warning even if the channeling bar is still mostly full. In addition, if the MCed unit is moved too far from the controlling priest the spell will automatically be disrupted. Attacks directed against the controller will shorten the duration of the spell but will have no effect on the the target's ability to break free of their own volition. Death (of the priest or the MCed target), silences, and some other abilities will entirely disrupt the spell.

http://www.wowwiki.com/Mind_Control