Ok I have a query…
In the description for precision telekenisis. It includes pulling a pin on a grenade as an example of a use for the power. Would you allow the unfotunate who ahd that happen to him a save or awareness roll of any kind? I'm thinking of potentially, for a character with rapid reaction, allowing them a -20 awareness test to hear the pin be pulled followed by a -10/-20 agility test to get the grenade away from them.
Also how would you guys rule hexagrammatic wards affecting the power? technically it's not an attack on the character but a piece of their equipment which is external to the wards. would you say it has no effect or maybe make the psyker take a willpower test to pull the power off.
Basically my group, all at 7,000 xp so they're far from newbies, are about to enter a very haunted area and one of the ghosts will pull this kind of stunt on them but it seems slightly arbitrary to me and I can imagine the look on a players face if I tell them they've just took 2d10+4 damage with a pen of 6 (krak grenade). While I will do such a thing I thought i'd run it by my fellow forumites first.