Recently my party psyker has been giving off vibes that he feels I am portraying his casting of the warp too dark in my flavor text and that a simple "the room grows darker or colder" should be enough. I am loath to do this because I feel it does little to distinguish a 40k psyker from jedi or some spell caster types from other settings them, let alone set the grimdark feel of the world ... what are others' opinions on this?