Malevolence( Ghostwalk, p. 36)
You can possess a creature and control its actions.
Grand Malevolence (Gh) ,
As the Minor Malevolence feat, except the maximum duration is a number of hours equal to your Hit Dice. A creature that saves against this ability is immune to your attempts to use any feat on the path of the dominator for one day. Each time you use this ability, you deal 2 points of Charisma damage to yourself.