Zeitgeist: The Gears of Revolution
A PC within 30 feet of any creature with the Thoughtform special quality can spend a move action to try to influence the creature with its thoughts. The PC makes an Intelligence, Wisdom, or Charisma check (DC 10), and chooses to make the target take one of the following saves—Fortitude, Reflex, or Will (DC 16 for each). A character can only attempt this once per round.
Fortitude: If the save is failed, the creature loses incorporeal until the start of the PC’s next turn. If it’s flying, it must land on its turn or fall.
Reflex: If the save is failed, the PC can move the creature 10 feet in any direction. This move provokes attacks of opportunity.
Will: If the save is failed, the PC is invisible to the creature until the start of the PC’s next turn.