Scry

You designate a point that you can see within range, creating a magical ward at that point. If you focus you can shift your perception to that ward and see and hear everything within line of the sight of that ward in a 30ft radius. The ward can persist as long as you want over any distance, but you can only have one instance of Scry active at a time. The ward is invisible and inaudible, but can be detected through magical means.