couple weeks ago friend and i played a game and came to a snafu that perhaps someone can find us a good ruling on.
A unit of grey knights assaults the deciever (necron ctan god if you don't know), what is the order of things happening? Does the Deciever have to choose whether it will leave the combat first or do the grey knights have to use their psychic powers and/or Grenades like Psychotroke first?