So, this has come up in a few league games recently.... auras. Say a chaplain recites a litany, there are 2 units in range. If he then zooms away, do they get the benefit of the litany? Conversely, if he recites a litany away from models, then zooms up and two units are now within the aura range, do they then get it?
Same applies for librarians and apothecaries, e.g. psychic fortress, cast it, give 5++ to models nearby, but if you move away from them, or models move inside the aura radius do they lose/get it?