The Mind Scream happens immediately when the Shadow ship moves within 6" of a psychic enemy, i.e. as a result of the Shadow ship's move. I'd say that if someone else moves to within 6" of the Shadow ship, the Mind Scream is not triggered - if the Psi Corps moves half a dozen Shadowcloaks to within 6" of a Shadow ship, the Shadow does not get to scream at all of them!
Staying where you are is effectively a move of 0". Basically, I'd guess that the scream happens when the Shadow ship is nominated to move, whether it actually moves or not. (If you really want to be pedantic and insist that the ship moves, I'll just move it 0.01". )
My question: if a Shadow ship has been pinned, can it still do Mind Scream? This comes back to the question asked in another thread, can a pinned Shadow ship be nominated during the movement phase? Given that the fluff reason for pinning is the pain caused by a strong beam strike, it is pretty certain that the ship will be screaming, so are nearby psychics still affected by it?
Staying where you are is effectively a move of 0". Basically, I'd guess that the scream happens when the Shadow ship is nominated to move, whether it actually moves or not. (If you really want to be pedantic and insist that the ship moves, I'll just move it 0.01". )
My question: if a Shadow ship has been pinned, can it still do Mind Scream? This comes back to the question asked in another thread, can a pinned Shadow ship be nominated during the movement phase? Given that the fluff reason for pinning is the pain caused by a strong beam strike, it is pretty certain that the ship will be screaming, so are nearby psychics still affected by it?