You don't get the Dominate skill until Act 2. Go ahead and plow through Act 1. Prologue is like a 15 minute mini movie, which was kinda bleh. Gameplay is very similar so far to the first game, which isn't necessarily a bad thing. I did an "Online Vengeance" mission, where my character got dropped into someone else's world to kill an orc that had killed him. Got some loot boxes for winning, wasn't too painful.