jeremesh wrote:A grandmaster can cast two psychic powers per turn. He assaults and causes a wound. Takes a psychic check to make his force weapon cause instant death and fails the test with a roll of 11. Can he now make a second attempt at his psychic check to cause ID?
Unless I'm crazy I'm reading that Grand Masters have a mastery level 1, so I'm not sure how he's casting two powers.
But Assuming you're talking about a model that could cast two powers a turn (like a librarian), I personally believe that the rules and
GW's
FAQs set a precedent allowing the same power to be cast twice a turn as long as the power isn't a psychic shooting attack (which a force weapon isn't).
But with that said, I know many people disagree with this assessment, despite the fact that there is no real evidence to suggest otherwise.